My mother's maternal grandfather apparently didn't have much to do with
his birth family -- he moved to the Rhineland from the Hesse region--
but via DNA, I found that his sister had married and had children, so my
mother had two unknown second cousins in Israel. I was way more excited
about this than she was!
It's worth noting that the match (granddaughter of a second cousin) was
way down on my FTDNA list -- she's my third cousin 1r -- and I wouldn't
have spotted her if her mother hadn't written me. When I saw segments of
50cM and 25cM, I knew there must be a close relationship.
JoAnne Goldberg - Menlo Park, California; GEDmatch M131535
BLOCH, SEGAL, FRIDMAN, KAMINSKY, PLOTNIK/KIN -- LIthuania
GOLDSCHMIDT, HAMMERSCHLAG,HEILBRUNN, REIS(S), EDELMUTH, ROTHSCHILD, SPEI(Y)ER -- Hesse, Germany
COHEN, KAMP, HARFF, FLECK, FRÖHLICH, HAUSMANN, DANIEL -- Rhineland, Germany