Passage: After attending Tak Sun School (德信學校) (several blocks from his home at 218 Nathan Road, Kowloon), Lee entered the primary school division of the Catholic La Salle College at the age of 12. In 1956, due to poor academic performance and possibly poor conduct, he was transferred to St. Francis Xavier's College, where he would be mentored by Brother Edward, a teacher and coach of the school boxing team. In 1958, Bruce won the Hong Kong schools boxing tournament, knocking out the previous champion in the final.In the spring of 1959, Lee got into another street fight, and the police were called.

Question: Who mentored Lee while at St. Francis Xavier's College?
Brother Edward