The History of Bittersteel and John Connington

In both cases, they were the leader in a civil war on the losing side. Both of them loved a famous person with Targaryen blood and it wasn't necessarily reciprocated. In Bittersteel's case, he fled to Essos multiple times while John Connington is currently involved in his return. But does anyone think Fagon is going to hold the throne? When it? Yeah, I think there's a good chance he wins it.