This is a name that appears in Dragon Age. I am not sure how to indicate that it should be tagged for that, but I have seen the tag for "Dragon Age Characters" before and said tag was not on this name, so I thought I would point it out. Trevelyan is the name of the family the player character belongs to in Dragon Age: Inquisition if said PC is a human.
Trevelyan is a noble house in the world of Dragon Age. If the player character in Dragon Age: Inquisition is human, he/she will have the surname Trevelyan.