I don’t know if it was just my group of friends growing up, but the McDuck lineage has always been a topic of hot debate… The discussions usually ended with an agreement that something incestuous was going on.
We also agreed that there was some serious neglect and emotional abuse: Heuie, Dewey and Louie are bounced around from uncle to uncle with no sign or contact with their parents. Even if there’s a reasonable explanation for this (perhaps their parents are dead?), the ducklings still never go to school and are constantly put in dangerous situations, often putting them in contact with three fat, Beagle escaped cons.
Anyway,I’m happy to report that there doesn’t appear to be any incest in the McDuck gene pool. Check it out for yourself: