Yarim Sydu is a man from Ha'iadtaswi and the commander of the Brotherhood of the Red Wolves. In a deal he made with Lord Karthyl Ugaros during the Clearing of the Sweet Isle, Yarim was granted lordship over one of the minor islands near the Sweet Isle and became a margrave, founding House Sydu.

However, Yarim would only enjoy his title for a few weeks, as he was slain during the Battle of the Sweet Castle.