Boy oh boy, are you in luck! Since I posted that message for my husband (who's father was the youngest of those 12 children) we have found a HUGE family (plus a few strays), and even had a reunion last August in Iowa! If it is the same family, your great-grandfather's cousin (give or take a generation) is even still alive!
I can't keep track of all the details myself, please e-mail my husband at
hknackstedt@hotmail.com to see where you link in!
The next reunion will tentatively be in Canada in a year or two!