hi i noticed that the household for the 1850 census lists a timothy o brian age 45 living with them.i assumed this is the brother of mary crowley,wife of cornelius. mass death mary a crowley hayes date of death- 16 may 1895 place- boston,suffolk,mass. residence- 23 park st. boston marital status- married spouse- joseph hayes age at death- 45y born abt.1850 place of birth- coventry,conn. father- cornelius crowley b-ire. mother- mary o brianb-ire.
mary a.crowley married joseph hayes in boston,mass.on 17 jan.1884.occupation of joseph at marriage-woodcarver
also see the death of agnes g.hayes born ca.1892 in boston. date of death- 26 april 1895 age at death- 3y residence- 23 park st.c.d. boston,mass. father- joseph hayesmother- mary a.crowley a bit of sad news but hope it helps in your search.