Thomsen of Trebond was the third child of Rispah Cooper and Coram Smythesson, the baron and baroness of Trebond after Thom of Trebond died. Thomsen had nine siblings: Jonthair, Alinna, Mylec, Daran, Liam, Thayine, Rose, Elenna, and Buran. He was a knight in the service of the Tortallan Crown and also served the kingdom in the King's Own.[1] During the Scanran War Thomsen was still squire to Emeric of Legann, serving near the City of the Gods.[2]
He didn't appear in any of the novels so far, but has only been mentioned by Tamora Pierce on the internet.