Addam Warmtide was born a lowborn Crownlander, raised upon Driftmark. He claimed to have taken the Black to escape punishment from being found abed with the Lord Velaryon's daughter.
Addam met Artos Harclay during dinner in the shield hall of Castle Black. The two bonded over stories and tales of their past.
At Artos' request, Addam became the Lord Steward of the Nightfort. He helped lead the mission to bring the fort back into commission.