This is a Message Board Post that is gatewayed to this mailing list. Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/rw/ZdB.2ACI/1701.2261.2260.1.1.1.2.1.1 Message Board Post: No, Larry. From the information you provided, with a common set of great grandparents, the two girls' respective grandfathers were brothers, their respective fathers were 1st cousins and the girls themselves were 2nd cousins. The basic rule of thumb is to count the number of generations from the common ancestor, in this case 3 as you said, and then subtract 1 for the generation in which the respective ancestors were siblings, in this case yielding 2 - 2nd cousins.