Another "not quite immediate family member" is going to test!

Just got off the phone with the grandmother of a high school classmate.  Her husband (J) is my grandmother's third cousin, four different ways, through Heinrich Schapansky, #946301 and Jacob Falk, #213384, both twice.

J's DNA will help us sort out the FALK DNA that my grandmother and her first cousin share from the KLASSEN DNA that Grandma and her first cousin will share with the KLASSEN matches mentioned in previous posts.  However... it's still not going to give us pretty little clean cut answers, because J and Grandma's top 23andme match (K) are also third cousins through Heinrich Schapansky and Jacob Falk. What this will tell us is the places where J, K, and Grandma's family all match, we know would come from the FALK/SCHAPANSKY shared lines, and NOT the KLASSEN lines that K and Grandma share.