Petyr Baelish
Margaery, newly married to Renly, reveals that she is aware of his romantic relationship with her brother and is willing to work around his desires to secure their alliance and her position. Following Renly's assassination, Margaery indicates to Petyr Baelish that she is aware that her brother-in-law, Stannis Baratheon, is more likely to be behind the assassination than Brienne of Tarth, the official suspect. She also makes it clear that her ambition is to be the Queen of Westeros, and that she will not settle for anything less.