Gainesville District Supervisor, Robert "Bob" Weir passed, July 20, of metastatic colon cancer. He was 62.
Board of County Supervisors Robert B. Weir-R was elected as the Gainesville District Supervisor in a special election on February 21, 2023, and assumed office on February 27, 2023.
Weir served for 5 years on the Haymarket Town Council.
Weir was known for being outspoken and unafraid to ruffle feathers. He was dedicated to his community and quick in responding to the citizens' concerns.
Over the past ten years, he championed keeping data centers out of neighborhoods and away from national and state parks. Weir's widespread concern for the community earned him support from residents regardless of political party.
Bob is survived by his wife of 34 years, Diane, and their children Sam, Michael and Megan.
Sunday evening, his office released the following announcement.
From the Office of Supervisor Bob Weir
It is with deep sorrow that we announce the passing of Prince William County Gainesville District Supervisor Bob Weir, who died on Sunday, July 20, 2025, from metastatic colon cancer.
Bob was a devoted husband, father, and public servant. He graduated from the University of Virginia. He spent most of his life in the Commonwealth and was proud to call the Gainesville District home. He and his wife of 34 years, Diane, raised their three children — Sam, Michael, and Megan — in the very community he later represented on the Prince William Board of County Supervisors.
He began his public service as a Haymarket Town Council member, where he established himself as a thoughtful, principled leader. His work on the board was marked by a no-nonsense approach, a deep commitment to transparency and a steadfast focus on the residents he served.
Among his many contributions, Bob was widely known for his dedication to constituent services. He personally followed up with residents, sought practical solutions, and consistently prioritized the day-to-day concerns of the people in his district.
His passing is a profound loss to Prince William County, and his legacy of quiet strength, integrity, and public service will not be forgotten.
At this time, the family respectfully requests privacy to grieve. Details regarding services and opportunities for the public to honor Supervisor Weir will be shared in the coming days.
The Prince William County Board of Supervisors released this statement concerning Supervisor Weir's passing.
It is with deep sadness and profound respect that we mourn the passing of our dear colleague and friend, Supervisor Robert “Bob” Weir. He served with unwavering dedication and integrity.
Bob was certainly a character – underneath his tough façade was a heart of pure gold who cared deeply about our community. He was not only a respected leader but also a neighbor, a mentor, and a friend to many. Bob served with humility and purpose, always guided by his belief in good governance and civic responsibility. His contributions to our county reflect a vision rooted in preserving the character of our neighborhoods while preparing for the future.
Bob’s legacy will endure in the lives he touched, the policies he helped shape, and the example he set for future generations of public servants.
We extend our deepest condolences to Bob’s family, friends, staff and all who were inspired by his leadership. And we are honored to have had the privilege of working alongside him.
He will be deeply missed.
The Prince William Republican Committee released the following statement:
It is with deep regret that the leaders and members of the Prince William County Republican Committee confirm the sad news that Prince William County Supervisor for Gainesville, Bob Weir, has passed away. His death leaves a hole in all of our hearts. We share our grief with his wife Diana, his children, other members of his family, and his uncountable friends in Prince William.
Bob Weir, a lifelong Virginian, was a devoted and tireless public official. Despite the demands of work and raising a family, he served the community from the time he moved here. His public service included being a member of the Haymarket Town Council, Planning Commission Chairman for the Town of Haymarket, Prince William County Sustainability Commission member, and since 2023, the county supervisor for the Gainesville District.
To all these positions, Bob brought his integrity, deep knowledge and conviction. He was combative in fighting for the future of Prince William but never vindictive, and would work with anyone to achieve his goals of preserving and protecting this county.
The Prince William County Republican Committee was always delighted when he attended our meetings. He was both humorous and forthright. He always told us as it is.
Our Committee will honor Bob Weir by continuing to fight for the goals we shared with him. He will continue to inspire us and will be with us for eternity.
Bristow Beat will update with more information.
