Comment by dantheman

Then what do their children take for last names? Each generation we have a doubling of name length?

  Gen 1: FirstName P1-LastName P2-LastName

  Gen 2: FirstName P1-P1-LastName P1-P2-LastName P2-P1-LastName P2-P2-LastName

  Gen 3: FirstName P1-P1-P1-LastName P1-P1-P2-LastName P1-P2-P1-LastName P1-P2-P2-LastName P2-P1-P1-LastName P2-P1-P2-LastName P2-P2-P1-LastName P2-P2-P2-LastName

and so on...