Lord Arlesi

Lord Arlesi is Jamis's father

Personality
Through his interactions with his son, he appears at least emotionally negligent if not physically abusive. It's implied that the issues Jamis initially displays are the result of the interactions with his father. Lord Arlesi displays immense disappointment in the difference between Lord Bonnaire's son, Remy, who had just taken command of the Gallant, and his own son Jamis who at his introduction is drunk and/or hungover. He straight up calls Jamis a disgrace to the family.

When Remy makes an impassioned speech to convince Jamis to stop subverting his authority, Jamis seems to be in disbelief that someone of authority could be on his side. And when Remy likens himself to a father of the crew, in his duties as captain, it causes Jamis further pain. Clearly Lord Arlesi and his son have had a contentious relationship, leaving Jamis in defiance and mistrustful of authority figures.

It's implied that Lord Arlesi has belittled Jamis and left him with poor self esteem and anger issues that he covers up by acting out and as if nothing matters.