Last Updated on October 5, 2026 by Orlando Bloom
Olivier-Maxence Prosper comes from one of Canada’s most accomplished basketball families. The Memphis Grizzlies forward is the son of former Concordia University basketball standouts Gaetan Prosper and Guylaine Blanchette, while his younger sister, Cassandre Prosper, has developed into a professional basketball player in her own right.
Basketball surrounded Olivier-Maxence from childhood in Montreal. Both of his parents competed at a high level, his mother represented Canada internationally, and his sister eventually followed him into professional basketball. The family’s support remained important as Olivier-Maxence left Canada as a teenager, played college basketball at Clemson and Marquette, and eventually reached the NBA.
Who Is Olivier-Maxence Prosper’s Girlfriend?
As of now, Olivier-Maxence Prosper has not publicly confirmed a girlfriend through reliable mainstream, NBA or official college sources.
Prosper has generally kept his romantic life private. His interviews and public profiles have focused much more heavily on basketball, his family, his Canadian identity and his professional development.
No sufficiently reliable recent source identifies a current romantic partner, and there has been no verified public announcement that Prosper is engaged or married.
For that reason, his current relationship status is best described as private rather than relying on speculation from social media or low-quality biography websites.
Does Olivier-Maxence Prosper Have Children?
As of now, there are no publicly confirmed reports that Olivier-Maxence Prosper has children.
His official basketball biographies and major profiles about his family do not mention a son or daughter.
Born on July 3, 2002, Prosper has spent much of his adult life concentrating on basketball after leaving Montreal at a young age to pursue opportunities in the United States and Mexico.
Who Are Olivier-Maxence Prosper’s Parents?
Olivier-Maxence Prosper’s parents are Gaetan Prosper and Guylaine Blanchette. Guylaine is sometimes identified in basketball records as Guylaine Prosper.
Both parents were successful college basketball players at Concordia University in Montreal, making basketball an important part of family life long before Olivier-Maxence became an NBA player.
The couple raised Olivier-Maxence and his younger sister, Cassandre, in Montreal while encouraging both children to participate in sports without forcing them to specialize in basketball.
Olivier-Maxence Prosper’s Father: Gaetan Prosper
Gaetan Prosper is Olivier-Maxence Prosper’s father and a former standout basketball player at Concordia University.
Gaetan’s family has roots in Haiti, and he moved to Montreal during his childhood. Basketball eventually became a major part of his life.
He starred for the Concordia Stingers during the 1990s and became one of the program’s leading players. He participated in multiple national championship tournaments and helped Concordia win Quebec conference titles.
Gaetan was also recognized as Concordia’s male athlete of the year in 1996.
His experience as a high-level basketball player gave Olivier-Maxence access to someone who understood both the opportunities and difficulties involved in pursuing the sport seriously.
How Gaetan Prosper Influenced Olivier-Maxence
Gaetan and Guylaine did not pressure Olivier-Maxence to become a basketball player simply because both parents had excelled in the sport.
Instead, they exposed their children to athletics and allowed them to discover what they genuinely enjoyed.
Olivier-Maxence naturally became fascinated by basketball. His parents have recalled that he was already playing with a ball almost as soon as he could walk.
As a young child, he attended his parents’ senior-league games in Montreal and would run onto the court with a basketball during breaks in the action.
When Prosper later became serious about pursuing basketball professionally, Gaetan’s experience helped the family evaluate important decisions about schools, development programs and playing opportunities.
Olivier-Maxence Prosper’s Mother: Guylaine Blanchette
Guylaine Blanchette is Olivier-Maxence Prosper’s mother. Basketball biographies have also referred to her as Guylaine Prosper.
Like Gaetan, Guylaine was an accomplished basketball player.
She played college basketball at Manhattan College and Concordia University and became one of the leading players in Canadian university basketball during her time with the Concordia Stingers.
Guylaine also reached the international level and represented Canada’s women’s national basketball program, including during 1997.
Her experience meant that both Olivier-Maxence and Cassandre grew up with a mother who understood elite competition firsthand.
Guylaine Blanchette’s Influence on Her Children
Guylaine has explained that she and Gaetan tried to teach their children lessons that extended beyond winning basketball games.
They emphasized work ethic, relationships, discipline and behaving properly toward teammates, coaches and officials.
She also supported Olivier-Maxence when he decided to leave home as a teenager to pursue stronger basketball competition.
That decision was significant because Prosper had to learn how to live independently while still completing his education and developing as a player.
Guylaine later attended the 2023 NBA Draft with Gaetan and Olivier-Maxence. When Prosper heard his name called in the first round, his mother was the first family member he embraced.
Are Olivier-Maxence Prosper’s Parents Still Together?
Yes. Recent public profiles continue to identify Gaetan Prosper and Guylaine Blanchette as husband and wife.
They have remained closely involved in the careers of both Olivier-Maxence and Cassandre and continue to be associated with the Concordia basketball community.
Who Are Olivier-Maxence Prosper’s Siblings?
Olivier-Maxence Prosper has one publicly documented sibling, younger sister Cassandre Prosper.
Cassandre followed her brother and parents into high-level basketball and eventually created her own professional career.
Cassandre Prosper
Cassandre Prosper is Olivier-Maxence Prosper’s younger sister. She was born on June 25, 2005, in Montreal, Quebec.
Although basketball ultimately became her primary sport, Cassandre participated in several activities while growing up, including soccer, tennis, volleyball and track and field.
She became an exceptional young athlete and was once recognized as one of the fastest sprinters in her age group in Quebec.
By her early teenage years, however, basketball had become her main focus.
Olivier-Maxence Prosper’s Relationship With Cassandre
Olivier-Maxence has spoken warmly about his younger sister and considers being a positive example for her an important responsibility.
During his college career, Prosper explained that he wanted the experiences and lessons he learned to help Cassandre have an even better path through basketball.
The siblings remained close even while attending schools in different parts of North America.
They regularly communicated about basketball and supported one another as their careers progressed.
Cassandre Prosper at Notre Dame
Cassandre became a five-star basketball prospect before joining the University of Notre Dame.
She enrolled early and developed into an important player for the Fighting Irish.
During the 2025-26 season, she averaged 13.6 points and 6.5 rebounds per game while earning Second-Team All-ACC honors and being named the ACC Most Improved Player.
Her college success eventually placed her in position to follow her brother into professional basketball.
Cassandre Prosper Reached the WNBA
In 2026, the Washington Mystics selected Cassandre Prosper with the 19th overall pick in the WNBA Draft.
The selection created a remarkable milestone for the Prosper family because Olivier-Maxence had already been selected in the first round of the 2023 NBA Draft.
The siblings consequently became a rare Canadian brother-sister combination to reach the NBA and WNBA.
Cassandre also represented Canada internationally before beginning her professional career, including appearing with the Canadian national team at the 2024 Paris Olympics.
Does Olivier-Maxence Prosper Have a Brother?
Reliable official biographies consistently identify Cassandre as Olivier-Maxence Prosper’s sibling and do not list a brother.
As of now, Cassandre is therefore his only publicly documented sibling.
Olivier-Maxence Prosper’s Uncle: Jay Prosper
Basketball talent extends beyond Olivier-Maxence’s parents and sister.
His uncle, Jay Prosper, also starred for Concordia University and later became involved in coaching with the Stingers program.
Jay joined Gaetan and Guylaine at the 2023 NBA Draft as Olivier-Maxence waited to hear his name called.
The presence of another former college basketball player within the extended family gave Olivier-Maxence yet another experienced mentor while developing his career.
The Prosper Family’s Connection to Concordia University
Concordia University occupies a special place in the Prosper family.
Gaetan Prosper, Guylaine Blanchette and Jay Prosper all played basketball for the Concordia Stingers during the 1990s.
The family has remained connected to the university long after their playing careers ended and continues to attend games and support the basketball program.
Olivier-Maxence and Cassandre ultimately chose different college paths, but the sporting culture created by their parents’ experiences at Concordia remained an important influence on both children.
Olivier-Maxence Prosper’s Childhood in Montreal
Olivier-Maxence Prosper was born on July 3, 2002, in Montreal, Quebec, Canada.
He grew up surrounded by basketball but was encouraged to experience sports naturally rather than being pushed toward a professional career.
His parents’ basketball backgrounds meant practices, games and discussions about sports were normal parts of family life.
As Prosper became taller and more skilled, it became increasingly clear that he had the potential to compete at an elite level.
Why Olivier-Maxence Prosper Left Canada
Prosper eventually realized that reaching his basketball goals would require him to leave home.
As a teenager, he moved to the United States and attended Lake Forest Academy in Illinois.
Living away from Gaetan, Guylaine and Cassandre was initially difficult, but Prosper has credited the experience with making him more independent and mature.
He stayed in regular contact with his family through phone calls, video calls and messages.
Prosper later joined the NBA Academy Latin America in Mexico, giving him access to international competition and professional-level development.
Olivier-Maxence Prosper’s College Basketball Career
Prosper began his college career at Clemson University during the 2020-21 season.
After one year, he transferred to Marquette University, where his development accelerated.
His combination of size, defensive versatility, athleticism and improving offense made him an increasingly attractive NBA prospect.
During the 2022-23 season, Prosper averaged 12.5 points and 4.7 rebounds while helping Marquette win Big East regular-season and tournament championships.
He subsequently entered the 2023 NBA Draft.
Olivier-Maxence Prosper’s Family at the 2023 NBA Draft
The 2023 NBA Draft became one of the most memorable nights in Prosper family history.
Gaetan, Guylaine, uncle Jay and other supporters joined Olivier-Maxence at Barclays Center in Brooklyn.
The Sacramento Kings selected Prosper with the 24th overall pick.
His draft rights were then traded to the Dallas Mavericks.
After years of leaving home, moving between countries and developing his game, Prosper had finally achieved the NBA dream his family had supported throughout his childhood.
Olivier-Maxence Prosper’s NBA Career
Prosper began his NBA career with the Dallas Mavericks during the 2023-24 season.
He also experienced the NBA Finals during his rookie year when Dallas advanced to the 2024 championship series.
After two seasons with the Mavericks, his career changed in September 2025 when Dallas waived him.
The Memphis Grizzlies quickly provided Prosper with another opportunity.
Olivier-Maxence Prosper and the Memphis Grizzlies
Memphis initially signed Prosper to a two-way contract in September 2025.
His role increased as he took advantage of opportunities during the 2025-26 season.
Prosper eventually performed well enough for the Grizzlies to convert his agreement into a multi-year standard NBA contract in March 2026.
Memphis later exercised his team option for the 2026-27 season.
As of now, Olivier-Maxence Prosper remains a forward for the Memphis Grizzlies.
Frequently Asked Questions About Olivier-Maxence Prosper’s Family
Who is Olivier-Maxence Prosper’s girlfriend?
Olivier-Maxence Prosper has not publicly confirmed a girlfriend through reliable mainstream or official sources as of now. His romantic life remains private.
Is Olivier-Maxence Prosper married?
No reliable public announcement has confirmed that Olivier-Maxence Prosper is married as of now.
Does Olivier-Maxence Prosper have children?
There are no publicly confirmed reports that Olivier-Maxence Prosper has children as of now.
Who is Olivier-Maxence Prosper’s father?
Olivier-Maxence Prosper’s father is Gaetan Prosper, a former Concordia University basketball standout who has Haitian roots.
Who is Olivier-Maxence Prosper’s mother?
His mother is Guylaine Blanchette, who is also frequently listed as Guylaine Prosper. She played college basketball at Manhattan and Concordia and represented Canada internationally.
Did Olivier-Maxence Prosper’s parents play basketball?
Yes. Both Gaetan Prosper and Guylaine Blanchette played basketball at Concordia University. Guylaine also represented Canada’s women’s national basketball program.
Does Olivier-Maxence Prosper have siblings?
Yes. He has one publicly documented younger sister, Cassandre Prosper.
Who is Olivier-Maxence Prosper’s sister?
Cassandre Prosper is Olivier-Maxence’s younger sister. She played college basketball at Notre Dame and was selected by the Washington Mystics in the 2026 WNBA Draft.
Does Olivier-Maxence Prosper have a brother?
Reliable official biographies identify Cassandre as his sibling and do not document a brother.
Is Cassandre Prosper related to Olivier-Maxence Prosper?
Yes. Cassandre Prosper is Olivier-Maxence Prosper’s younger sister. Both were born in Montreal and became professional basketball players.
Where is Olivier-Maxence Prosper from?
Olivier-Maxence Prosper was born and raised in Montreal, Quebec, Canada.
Is Olivier-Maxence Prosper Haitian?
Prosper is Canadian and has Haitian family heritage through his father, Gaetan Prosper, whose family moved from Haiti to Montreal.
Orlando Bloom is a sports journalist and analyst specializing in in-depth NBA coverage, tactical breakdowns, and advanced player analytics. With a passion for professional basketball, he covers everything from trade deadline maneuvers and Draft prospects to team strategies and league-wide trends. Combining detailed stat analysis with game context, Orlando delivers sharp insights and compelling stories for avid basketball fans and casual followers alike.
