|Book(s)||A Feast for Crows|
Alyn Velaryon, also known as the Oakenfist, was an admiral.
According to semi-canon sources, Alyn Velaryon was an admiral. He had two children with his cousin, Elaena Targaryen, Jon and Jeyne Waters.  He loved her even though he was married to another. She named their children 'waters' in honor of Alyn.