Dating brothers wifes sister
As you get to second cousins on down, the tree for proving this shows descent from a single individual.
While these individuals would obviously be second cousins on many lines, that is where the special circumstance ends. Mc Clure is a professional genealogist specializing in celebrity trees and computerized genealogy.
-- Debbie A: Kinship is often one of the most confusing aspects of our genealogical research.
It is certainly a stronger blood tie than if the cousins weren't descended from the same two families.
In your case, it was two sets of siblings, but they were still cross cousins.
There is another type of cousinship that is possible with first cousins.
In general, n-level cousins share two (n 1)-level ancestors (but no n-level ancestors).
If your father’s cousin’s daughter just had a baby boy, how should you two be introduced?