Crotty Family Genealogy Forum
I believe I may be from the Crotty line that you reference. I've just begun my search in the last few months, so I don't have anything as old as what you have, but I do believe I have some info from the Mary Pennington (Dunn)/Michael Crotty line--that I believe you are also from?
My great great grandfather was a C. Lewis Crotty. My grandfather has an old newspaper article detailing his death (by suicide) in 1922. This article spells out the detail of the suicide and also info on his remaining descendants. It references a single brother "GW (Wash) Crotty" of Princeton as a remaining sibling.
Not everything matches perfectly though. A separate obit claims a birth date of Feb 2, 1849, which is slightly off from the 1848 birth from the book. Family legend also believed his name to be Christopher Lewis.
Any chance we have a match? Please contact me so we can trade notes.