In around 1422, Motomasa seemed to succeed to the position of Kanze-dayu from his father (however, the later Kanze school does not count Motomasa among the past leaders).
応永29年（1422年）頃、観世大夫の座を父から譲られたとされる（但し、後世の観世流は元雅を歴代に数えない）。