Hi. I don't know if you live in Boston, but do you know the names of Patrick's parents? If not, and you know his birthdate, you should try to get to the Massachusetts Archives near the JFK Library and UMass Boston. They have birth, death and marriage records for the State of MA through 1905. If you check the birth and marriage entries, they usually list the names of the parents. I'm not sure if the Archives has them, but the Boston Public Library has Census records for Boston from the late 1880s and early 1900s. What you could do is track down Patrick's father's listing. It will list the parents and children and their approximate ages (the dates aren't always accurate, but it's a good starting point.) I've also written to the Archdiocese of Boston Archives to get baptism info on relatives. I did this to get the names of godparents in the hopes that it will list names of other relatives. It doesn't note the actual relationship of the godparent to the child, but every piece of info helps.
Anyway, I'm searching for Curley/Glennon relatives in Boston (Roxbury) from the late 1800s, early 1900s. My great grandparents were Thomas Curley and Margaret Glennon. They had ten children. Margaret died of Typhoid Fever in 1907 and since Thomas couldn't handle taking care of all of the children, they were split up among family members. Margaret had a sister Winnie who married a Gately and they lived on Wait Street, near Mission Church. Three of my great aunts ended up living with her after their mother died. I have also seen the names Thomas Gately and Patrick Gately as godparents for two of the children.