The Jomon (family crest) is Yatsu-bana bishi ni Futatsu-domoe (eight square-shaped flowers and two tomoe [semicircular swirling shape]) and the Kaemon (alternate personal crest) is Hishi Takara Musubi (literally, square knot).
定紋は八ツ花菱に二ツ巴、替紋は菱宝結び。