John Steven McCormack Obituary

John Steven McCormack of Quincy, Massachusetts, born on January 15, 1969, passed away on September 25, 2026. Leave a sympathy message to the family in the guestbook on this memorial page of John Steven McCormack to show support.

He was predeceased by: his siblings, Phyllis Munnis and Paul Lynch. He is survived by: his wife Mary Elizabeth McCormack (Flater); his children, Kate A. McCormack of Quincy, Steven T. McCormack of Brooklyn, NY and U. S. Marine Corps; his siblings, Gerard Lynch (Kathy), Kenneth Lynch (Denise), Elizabeth Lynch and Barbara Lynch (Charles Petri); his sister-in-law Mary Ellen Lynch; Dorothy McCormack of Quincy. He is also survived by nieces, nephews, cousins.

Visitation will be held on Monday, October 5th 2026 from 3:00 PM to 7:00 PM at the Keohane Funeral Home (785 Hancock St, Quincy, MA 02170). A funeral Mass will be held on Tuesday, October 6th 2026 at 10:00 AM at the St. John the Baptist Church (44 School St, Quincy, MA 02169). A burial will be held on Tuesday, October 6th 2026 from 12:45 PM to 1:00 PM at the Massachusetts National Cemetery.

For those who wish, donations in lieu of flowers may be made to Glioblastoma Research Organization at Gbmresearch.org.