A teacher and administrator, Allison "devoted her life to nurturing children."
Visiting hours will be Friday, followed by a funeral service Saturday.
Orangio, diagnosed with cancer late last year, passed away Tuesday at 51.
The hunt for Dzhokhar Tsarnaev in 2013 culminated in a tense standoff at David Henneberry's Watertown home.
Hashian, 67, was on percussion for the band's self-titled debut album, which included the hit "More Than a Feeling."
Robinson was a history and social studies teacher at Watertown High School for 42 years and co-founded the Watertown Evening School.
A Funeral Mass will be celebrated on Saturday May 2, 2015 at 9 AM in the Church of Saint Patrick, Watertown for Joseph Patrick McHugh
Musto died Saturday, Nov. 22.
Tocco died Wednesday, July 9.
Gaudette grew up in Waltham and lived in Watertown for 37 years.