I'm in the early research stages of the Daley family of which living members are residing in Ontario, Canada.
Concerning my findings on Mary E. Daley, she is listed in the 1880 US Census for Saint Paul, Ramsey County, Minnesota as the daughter of Patrick and Rosa Daley with brother John T. Daley born in 1868; brother Francis J Daley born in 1870; sister Rosa A Daley born in 1874; brother Joseph O Daley born in 1877; and brother Charles L Daley born in 1879.
Mary E. Daley of this family was born in 1872.
This is the only info I have on this family.
I'm trying to determine whether this family has connectivity to the family of Michael Daley and Elizabeth McGuire who came from King's County, Ireland in 1826, and eventually settled is Osgoode, Ontario, Canada.
Based on the date of birth, you indicate for Mary E. Daley, I would suggest that the two Marys are different.If in my research I find out otherwise, I'll let you know.