House Rowanmantle was a small noble house of Cormyr. The family was originally from the Tilverton area but moved its base to Suzail at some point. The family strongly supported the Obarskyrs and advised the crown during the rule of the Steel Regent. The house's strong Dalelands connections helped to forge an alliance between Cormyr, the Dalelands and Cormanthor. This alliance forced Sembia to agree to peace terms.