Just started season 2. Does anyone know how Stannis knew about Joffrey's birth parents before spreading the word all over the seven kingdoms?
Originally Posted by http://gameofthrones.wikia.com/wiki/Stannis_Baratheon
After King Robert's death, and realizing the truth of Joffrey's parentage, Eddard decides to back Stannis as the rightful King. ... Eddard later sends a letter to Stannis at his fortress stronghold of Dragonstone, informing him of the situation.
If you're talking about who I think you're talking about, it's technically, "ding dong the bastard is dead."