Thanks to all who have responded - still going through each of the comments. FYI, my GGF Patrick was a member of the Foresters and had a life insurance policy from them (see the attached) - the applications are online and contain some useful info as everything was reported by him personally (though he was illiterate and probably relied on someone else to fill out the form). The doc is definitely him as I can verify the local address via other documents and it referenced his marriage in Edinburgh, which is also confirmed on multiple other docs.
His birthplace is "Clune" in "Leigthram," Ireland; presumably, that's Cloone, Leitrim (again, the spelling was likely at the mercy of the person filling out the form who was trying to interpret what he said through Patrick's accent and whatever spelling conventions he may have known at the time).
The form was completed in 1894 and his reported age was 37, implying a year of birth of 1857. UK and US census data and his marriage indicate possible years of birth of 1855, 56, 57, and 58, so it's probably in that ballpark.
He listed his father (no name, but should be Michael McKeon/McEwan/McKeown/McKeone) as deceased by 1894 at age 75 and that he didn't know the date or location of his death (again, it would be difficult to receive news an ocean away without being able to read or write, or he just didn't remember). However, another section of the form states that he was 32 when his father died, implying a death in 1889. I found a few possible candidates based on YOB and YOD, but can't confirm which could be him. His mother, Catherine Duignan was listed as being alive at age 70 in 1894, implying a birth date of 1822 (take that with a grain of salt).
Other information points to him being one of 6 children with 5 siblings: 3 brothers and 2 sisters (no names). For the brothers, one was killed at 31 in an accident in 1882, implying a year of birth of 1851, one was 42 (1852) and the other was 39 (1849) - all of these years probably have a +/- of 5 years. I found records for 4 of the 5 possible siblings: James (1849), John (1851), and Charles (1857) born to Michael McKeon and Catherine Duignan.
For the sisters, both were still alive at 45 (1849) and 35 (1859); I only found a record for Anna (1854).
I have no idea which of his siblings might have come to the US - there were quite a few McKeons in his neighborhood in Medford, MA, as well as Belmont, Somerville, and other nearby areas, so either some siblings or cousins made it, just not sure which ones. I found another Michael McKeon (b. 1865) that was apparently a cousin; his Forrester's application indicated that his beneficiary was Bridget McKeon from "Renagowna, Bromad (sp?), County Leitrim." Not sure where that is or how they're connected, but the likely are.
