So far, we've got (deceased in bold):

Donney (Seamus) -- role specifics not published

Mairead (unknown) -- probable doctor, other particulars unknown

Padraic (AVSM) -- serial killer

Brendan (unknown) -- lead IRA wetworker

Oswald (unknown) -- killer (presumably lead English wetworker)

Davey (unknown) -- killed Paddy's cat in prequel, sought by Jolt? (pizza's post)

Any other names I've missed?