At the Council meeting, Tyrion says "I once brought a jackass and a honeycomb into a brothel" - a part of his "confession" to Lysa in "A Golden Crown".
Ros tells Theon about the bloody brawl between Ned and Jaime. Robert and Cersei confront Ned about the brawl and about Tyrion's kidnapping. Littlefinger refers to the brawl and to Tyrion's kidnapping.