I love it when a random DNA hit leads me to a new "close" cousin! Got a 3rd cousin hit, and checked on my Sister's kit, where the match was only 4-6th cousin. Not surprising since I inherited more of the Irish DNA.
Started sleuthing on the family tree of the new cousin, and since they were in California, I could check the CA death records. I found a death record for Robert Martin Lee that identified the Mother as Conroy. BINGO! More sleuthing and found them in the census for 1920-40, and her name was Katherine Lee (nee Conroy). I found her death record in 1963, and her Mother was listed as Toole. KA-CHING! My Great Grandmother was Cait/Kate Toole, and this woman was her sister Mary Toole! I verified all of this with Irish baptism record for Kate Conroy and 1901 census for family of John and Mary Conroy.
Turns out I had Mary and her family in my tree, but not the descendents down to present day. It is curious that they are in San Francisco, and I wonder if my Grandfather knew them? By my figuring, Kate Conroy and my Grandfather Martin Connolly would be 1st cousins.