Board Thread:General Discussion/@comment-4708902-20160904153307/@comment-3035448-20160907125850

I'm sure Robert was friends with Rickard and Brandon, after all the latter rode to King's Landing demanding justice after Lyanna's alleged kidnapping. So yeah, I'm sure Robert was angry about the deaths of the two Starks. Still, I'm sure he was mostly furious over Rhaegar taking Lyanna from him.