Among court nobles of Daikakuji-to (imperial lineage starting with Emperor Kameyama) who were ousted from important posts in the court of Emperor Hanazono one after another, Moronobu alone promoted as an exception to Dainagon (chief councilor of state) in 1316.
花園朝では大覚寺統系の公家が軒並み要職から外されていく中で正和5年（1316年）に異例の大納言昇進を果たした。