Stefan Groomsman (pronounced STEF-uhn) was a hostler in the Tortallan royal palace. Later he even became the head hostler. He bred horses for the knights and supervised all that was going on. He was also the man that gave Daine Mangle, a packhorse. He was one of Numair's former students since he had wild magic. He appears in most of the Song of the Lioness novels and also makes small appearances in The Immortals quartet and the Protector of the Small quartet.