Thomas C. O'Sullivan Obituary

It is with great sadness that we announce the death of Thomas C. O'Sullivan of Springfield, Massachusetts, who passed away on April 21, 2026, at the age of 76, leaving to mourn family and friends. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.

He was predeceased by: his parents, Thomas O'Sullivan and Catherine O'Sullivan (Harrington); his siblings, Daniel O'Sullivan, Catherine Kelley and Eileen O'Sullivan; and his brothers-in-law, Joe Burke and Richard Hansen.

He is survived by: his wife Erika O'Sullivan (Marx) of Springfield; his children, Thomas O'Sullivan (Heather) of Wilbraham, Sheila Buffone (Vincent) of Belchertown and Michael O'Sullivan (Abigail) of Wilbraham; his siblings, John O'Sullivan (Eileen) of Springfield, Mary Hansen of Westfield and Margaret Bagge (John) of Wilbraham; his siblings-in-law, Maureen O'Sullivan and Robert Kelley of Westfield; and his grandchildren, Christopher (Elise), Emma, Zachary, Brayden, Nicholas, Grayson, Maxon and Cameron. He is also survived by many nieces and nephews.

In lieu of flowers, donations may be made to the Melanoma Research Foundation or Wreaths Across America.