I've been working on the Arryn CS. Does House Arryn have any claim to the Iron Throne? 

I did some wiki digging and found that [url=http://awoiaf.westeros.org/index.php/Rodrik_Arryn]Lord Rodrik Arryn[/url] married [url=http://awoiaf.westeros.org/index.php/Jaehaerys_I_Targaryen]King Jaehaerys I Targaryen[/url]'s daughter [url=http://awoiaf.westeros.org/index.php/Daella_Targaryen_(daughter_of_Jaehaerys_I)]Daella[/url]. They had a daughter [url=http://awoiaf.westeros.org/index.php/Aemma_Arryn]Aemma Arryn[/url], she had a daughter who had children, some that became kings. Of course this was hundreds of years ago.