The Dancing Master = Syrio Forel
The Disgraced Knight/The Fool = Ser Dontos Hollard
Former/excommunicated Maester = Qyburn
Squire = Podrick Payne
The Masked Woman = Quaithe
Kudos for not including the most unnecessary character in the whole entire series though: I don't understand why people get so caught up about that one. Strong Belwas is the most nothing character that there is in the books. Leaving him out of the tv series was inspired casting.
And make the quiz LONGER! There isn't enough time!