It is very possible that your great grandmother's attendant Mary McGeehan may have been my great grandfather's FIRST wife Mary McGrady (McCraedy) who died just after childbirth (around 1895) of their son Hugh. Freeland PA is very close to Hazleton PA, where they lived.
Patrick certainly knew the McMonigles from Derrylaconnell, Donegal. His sister Mary McGeehan married Andrew McMonigle and they emigrated to Hailey Idaho. I don't think she (his sister) ever made it to PA. So I'm thinking it might have been Patrick's first WIFE Mary McGrady (McCraedy).
Do you have any more info? Where did your McMonigles come from? firstname.lastname@example.org