Who is Roger Chatworth from Velvet Song and what is their importance?

Roger Chatworth is the head of the Chatworth family and Elizabeth's older brother. Like Raine, Roger is a prideful and honorable man. He is not eager to stop the feud between their families because he wants the Chatworth name vindicated.

When Roger decides to speak with Alyx after her marriage to Raine, he begs for her help in releasing Elizabeth. He also accidentally kills his own brother because he believed the knight fighting him was Raine.