I give my people names in alphabetical order, so I always know where I am in the lineup. So Alison and Brad had children Camilla, David, Ethan, and Frances. Frances and George have Harriet and Isaac. When Frances and George perish, whichever of their kids wants to have children will marry someone who'll have his or her name changed to something beginning with "J," and they'll have "K" "L" and "M" kids. At least, they will if they cooperate. Frances and George were supposed to have a "J" kid, but they refused to have more than two.