Collin Gillespie’s Family: Girlfriend, Children, Parents and Siblings

Last Updated on October 5, 2026 by Candida Lucia

Collin Gillespie’s journey from an overlooked high school prospect in Pennsylvania to an established NBA guard has always been closely connected to his family. The Phoenix Suns player is the son of Jim and Therese Gillespie and grew up in Huntingdon Valley, Pennsylvania, alongside his older siblings, Victoria and James Gillespie.

Athletics were a major part of the Gillespie household long before Collin reached the NBA. His sister competed in college swimming, his brother became an All-American football player at Widener University, and his father had his own background in football and basketball. Gillespie has also been publicly linked for several years to Christina Mastracchio, whom he met while they were students at Villanova. Here is what is publicly known about Collin Gillespie’s girlfriend, children, parents and siblings.

Who Is Collin Gillespie’s Girlfriend?

Collin Gillespie has been publicly linked to Christina Mastracchio, his longtime girlfriend from his Villanova years.

Gillespie and Mastracchio reportedly met while attending Villanova University. Gillespie was developing into one of the Wildcats’ most important basketball players, while Mastracchio was involved with the Villanova Dance Team.

Their relationship became publicly visible in 2019 when Gillespie shared photographs with Mastracchio on social media. Subsequent reports described the pair as being in a long-term relationship.

As recently as November 2025, coverage of Gillespie’s personal life continued to identify Mastracchio as his girlfriend. Neither Gillespie nor Mastracchio has become particularly public about their relationship, however, and there has been limited authoritative reporting about their status during 2026.

For that reason, Mastracchio is best described as Gillespie’s longtime publicly reported girlfriend, while recognizing that the couple keeps their current relationship status largely private.

Who Is Christina Mastracchio?

Christina Mastracchio attended Villanova University and was a member of the university’s dance team.

She studied cognitive and behavioral neuroscience and also pursued academic interests related to psychology and cognitive science. After graduating from Villanova, she continued working in neuroscience and clinical research.

Recent reporting has described Mastracchio as working in clinical research in Philadelphia. Unlike Gillespie, she has generally maintained a relatively private public profile.

The couple’s shared connection to Villanova remains an important part of their story, since their relationship reportedly began while Gillespie was playing college basketball for the Wildcats.

Is Collin Gillespie Married?

There is no reliable public confirmation that Collin Gillespie is married.

Some biography websites occasionally use terms such as wife when discussing Christina Mastracchio, but established reporting has generally referred to her as his girlfriend.

Until Gillespie publicly announces a marriage or a reliable source confirms one, it is more accurate to describe Mastracchio as his longtime girlfriend rather than his wife.

Does Collin Gillespie Have Children?

There are no publicly confirmed reports that Collin Gillespie has children.

Gillespie has not announced becoming a father, and his official NBA information and recent profiles do not identify him as having a son or daughter.

He keeps much of his private life outside basketball away from public attention, so information about his family should be limited to relationships that have been reliably documented.

Who Are Collin Gillespie’s Parents?

Collin Gillespie’s parents are Jim Gillespie and Therese Gillespie. Their identities are confirmed by both Villanova and the Phoenix Suns.

Collin grew up in Huntingdon Valley, Pennsylvania, after his parents moved from Philadelphia’s Mayfair neighborhood. Both Jim and Therese attended Archbishop Ryan High School, giving the family particularly strong roots in Northeast Philadelphia.

His parents made sports a major part of family life while also arranging their work schedules so that someone could regularly be available for Collin and his siblings.

Collin Gillespie’s Father: Jim Gillespie

Jim Gillespie is Collin Gillespie’s father and spent decades working for the Philadelphia Police Department.

A 2022 profile by The Philadelphia Inquirer reported that Jim had spent 33 years with the Philadelphia Police Department. For many years, he worked an overnight shift from midnight until 8 a.m.

That schedule was partly designed around his family. Jim explained that he would arrive home as Therese was leaving for work, helping ensure that one of the parents was regularly available for their children.

Jim also had an athletic background. He played football and basketball at Archbishop Ryan High School, although injuries affected his own playing career.

Sports subsequently became an important way for Jim to connect with his sons. He coached Collin and James in baseball when they were young and encouraged the brothers to compete seriously rather than allowing the younger Collin to win simply because of his age.

That competitiveness helped shape one of the defining traits of Collin’s basketball career. Gillespie became known at Villanova and later in professional basketball for his toughness, composure and determination.

How Jim Gillespie Influenced Collin’s Competitive Mentality

Collin grew up competing constantly against his older brother James, and their father encouraged that competitive atmosphere.

Jim told The Philadelphia Inquirer that he and James never intentionally allowed Collin to win when they competed against him. The goal was to teach the younger Gillespie that success had to be earned.

The brothers competed in basketball, football, baseball and even simple races home from the school bus.

Because James was only about one year older, Collin frequently played against children older than himself. That forced him to develop skills and toughness earlier than many players his age.

Jim remained heavily involved as Collin progressed through Archbishop Wood, Villanova and professional basketball.

Collin Gillespie’s Mother: Therese Gillespie

Therese Gillespie is Collin Gillespie’s mother and another central figure in his journey.

Therese and Jim worked together to manage the demanding schedules created by raising three athletic children. Their oldest child, Victoria, competed in swimming, while James and Collin participated in several different sports.

When neither parent could provide transportation because of work obligations, the children’s grandmothers sometimes helped with practices and events, reflecting how much of an extended-family effort their athletic upbringing became.

Therese remained closely involved throughout Collin’s college career. When he suffered a serious knee injury during his senior season at Villanova in March 2021, both Therese and Jim were present to support him through the diagnosis, surgery and rehabilitation process.

She was also present alongside her husband when Collin received major honors at Villanova. In March 2022, Jim and Therese joined him when he was recognized as both Big East Player of the Year and Big East Scholar-Athlete of the Year.

Who Are Collin Gillespie’s Siblings?

Collin Gillespie has two older siblings: a sister named Victoria Gillespie and a brother named James Gillespie.

The Phoenix Suns officially list Victoria and James as Collin’s two siblings.

Both were athletes themselves, making Collin the youngest member of a highly competitive sporting family.

Collin Gillespie’s Sister: Victoria Gillespie

Victoria Gillespie is Collin’s older sister and was the first of the Gillespie children to become heavily involved in competitive sports.

Victoria became a collegiate swimmer at the University of Delaware. Delaware Athletics records show her competing in freestyle and butterfly events for the Blue Hens.

Her swimming schedule was demanding enough that Jim Gillespie later recalled how difficult it could be for the parents to manage sporting commitments involving all three children simultaneously.

Victoria’s swimming came before James and Collin became heavily involved in their own sports, meaning Collin grew up from a young age in a family already accustomed to competitive athletics and travel.

Unlike her younger brother, Victoria has remained largely outside the public spotlight since her collegiate athletic career.

Collin Gillespie’s Brother: James Gillespie

James Gillespie is Collin Gillespie’s older brother and one of the biggest sporting influences from his childhood.

James and Collin are only about 12 months apart in age, allowing them to grow up competing directly against each other.

The brothers played baseball, football and basketball together. Because James was older, Collin frequently competed in age groups above his own so that their parents could keep the brothers on similar schedules.

James eventually became an outstanding football player at Widener University.

Playing wide receiver for the Widener Pride, James developed into one of the best NCAA Division III receivers in the country. He was named the 2019 Middle Atlantic Conference Offensive Player of the Year and earned D3football.com Third-Team All-American honors.

James finished his Widener career among the program’s leaders in receptions, receiving yards and receiving touchdowns.

He also joined Widener’s basketball program, giving the Gillespie brothers another shared connection through the sport that eventually became Collin’s profession.

Collin and James Gillespie’s Competitive Relationship

The relationship between Collin and James played a major role in Collin’s development.

James once described them as extraordinarily competitive siblings. Their competition extended beyond organized games.

When they got off the school bus, the brothers sometimes raced each other home. The winner would get possession first when they began playing basketball in the driveway.

That competition continued across different sports throughout childhood.

Despite competing intensely, the brothers became strong supporters of each other as adults. Collin attended James’ college football games, while James traveled to support Collin during major moments of his Villanova career, including the Wildcats’ 2018 national championship run.

How Collin Gillespie’s Family Shaped His Basketball Career

Gillespie did not grow up as a nationally celebrated basketball prospect. His family helped give him the competitiveness necessary to succeed despite initially receiving little attention from major college programs.

He attended Archbishop Wood Catholic High School in Pennsylvania and played several sports before eventually concentrating more seriously on basketball.

Going into his senior year, Gillespie had no NCAA Division I scholarship offers.

That changed dramatically after a breakout season. He led Archbishop Wood to its first Philadelphia Catholic League championship and a Pennsylvania Class 5A state championship while averaging 24.1 points per game.

Villanova coach Jay Wright eventually offered him a scholarship.

Gillespie accepted and went on to build one of the most accomplished careers of any guard in Villanova history.

Collin Gillespie’s Career at Villanova

Gillespie joined Villanova in 2017 and immediately became part of a championship team.

As a freshman, he contributed to the Wildcats’ 2018 NCAA national championship.

His role expanded significantly during the following seasons. Gillespie eventually developed into the leader of the team and won Big East Player of the Year twice.

During his final season in 2021-22, he won the Bob Cousy Award as the best point guard in college basketball and helped Villanova return to the Final Four.

He also excelled academically. Gillespie was named Big East Scholar-Athlete of the Year while maintaining an outstanding graduate-school GPA.

His parents joined him when those achievements were formally recognized, making his final Villanova season another major family milestone.

Collin Gillespie’s Journey to the NBA

Despite his extraordinary college career, Gillespie was not selected in the 2022 NBA Draft.

He signed with the Denver Nuggets and spent his first professional seasons developing within their organization. An injury prevented him from playing during his first season, although he was part of Denver’s 2023 NBA championship organization.

Gillespie eventually made his NBA debut during the 2023-24 season.

He joined the Phoenix Suns in 2024 and gradually earned a much larger role.

His breakthrough came during the 2025-26 season, when Gillespie established himself as an important member of Phoenix’s backcourt and became one of the NBA’s most productive three-point shooters.

In June 2026, his persistence was rewarded when he agreed to a four-year, $48 million contract extension with the Suns.

Frequently Asked Questions About Collin Gillespie’s Family

Who is Collin Gillespie’s girlfriend?

Collin Gillespie has been publicly linked for several years to Christina Mastracchio, whom he met at Villanova University. Reporting in late 2025 continued to identify Mastracchio as his girlfriend, although the couple keeps their current relationship relatively private.

Is Collin Gillespie married?

There is no reliable public confirmation that Collin Gillespie is married. Christina Mastracchio has generally been identified as his longtime girlfriend rather than his wife.

Does Collin Gillespie have children?

There are no publicly confirmed reports that Collin Gillespie has any children.

Who are Collin Gillespie’s parents?

Collin Gillespie’s parents are Jim Gillespie and Therese Gillespie.

Who is Collin Gillespie’s father?

Collin Gillespie’s father is Jim Gillespie, a longtime member of the Philadelphia Police Department. Jim also played football and basketball when he was younger and helped develop Collin’s competitive mentality.

Who is Collin Gillespie’s mother?

Collin Gillespie’s mother is Therese Gillespie. She and Jim raised Collin and his two older siblings in Huntingdon Valley, Pennsylvania, and supported their extensive involvement in sports.

How many siblings does Collin Gillespie have?

Collin Gillespie has two older siblings: Victoria Gillespie and James Gillespie.

Who is Collin Gillespie’s sister?

Collin Gillespie’s older sister is Victoria Gillespie. She competed in collegiate swimming at the University of Delaware.

Who is Collin Gillespie’s brother?

Collin Gillespie’s older brother is James Gillespie, a former Widener University football and basketball player who earned All-American honors as a wide receiver.

Did Collin Gillespie’s brother play college football?

Yes. James Gillespie was a standout wide receiver at Widener University and was named the 2019 Middle Atlantic Conference Offensive Player of the Year.

Where is Collin Gillespie’s family from?

The Gillespie family has strong roots in Northeast Philadelphia. Collin grew up in Huntingdon Valley, Pennsylvania, after his parents moved from Philadelphia’s Mayfair neighborhood.