Viserys mentions a dragon named Vermithrax.
Littlefinger reminds Ned that he warned him not to trust him.
Jaime and Euron speak about the Greyjoy's Rebellion, which was mentioned by Tyrion, Jaime and Jory in "Cripples, Bastards, and Broken Things".
Arya tells Nymeria "that's not you". In "Cripples, Bastards, and Broken Things" she told her father "that's not me".
Gendry recalls that Ned Stark visited his workshop.