Talk:Air Temple Island/@comment-65.94.205.218-20120125174248/@comment-743796-20120130044311

We don't know what the laws regarding cousin marriages is in the Avatar World, but marriages between first cousins (those sharing common grandparents) are permitted in the majority of the world but the rates have been declining over the past century (The US, although legal in some states, is the only country in the world to criminalize 1st-cousin marriage). But yes, all Airbenders will be related since they will all share a common ancestry with Aang, as he was the last Airbender and thus the progenitor of the new population of Airbenders.