Sean Mahoney Obituary: Marlborough High Football Community Mourns Longtime Coach After Battle With Rare Neurological Disease

MARLBOROUGH, MA — The Marlborough community is mourning the loss of longtime Marlborough High School football coach Sean Mahoney, who has passed away following a courageous battle with Multiple System Atrophy (MSA), a rare and aggressive neurodegenerative disease.

News of Mahoney’s passing has prompted an outpouring of grief from former players, colleagues, students, and residents who remember him as a passionate coach, dedicated mentor, and respected leader both on and off the field.

Sean Mahoney spent years shaping the Marlborough High football program, earning admiration for his commitment to developing student-athletes not only in sport but also in character. Those who played under him describe a coach who demanded discipline and effort while also showing deep care for the young people he guided.

His battle with Multiple System Atrophy, a progressive neurological disorder that affects the body’s autonomic functions and motor control, was met with resilience and strength. Despite the challenges of the illness, Mahoney remained a figure of inspiration to those around him, with many noting his determination and positivity throughout his health struggles.

Former players and fellow coaches have begun sharing tributes, recalling his leadership, his passion for football, and the lasting lessons he instilled in those he coached. Many describe him as a mentor whose influence extended far beyond the game, shaping lives long after players left the field.

Within the Marlborough High School community, Mahoney is being remembered as a cornerstone of the athletic program, someone who built traditions, fostered teamwork, and helped define the culture of the team for years.

As word of his passing spread, messages of sympathy and remembrance poured in from across the region. Alumni and community members have expressed gratitude for his dedication and the positive impact he made on generations of students.

Funeral and memorial service arrangements are expected to be announced by the family at a later date.

Sean Mahoney will be remembered for his leadership, his unwavering commitment to his players, and his enduring legacy within the Marlborough High football program. His influence will continue to live on in the athletes he coached and the community he helped shape.