In fact, the Nishiyotsutsuji family, from which he came, produced many poets, and also Kiminari NISHIYOTSUTSUJI was a poet of Nijo school (school of the Sanjonishi family), which could be traced back to FUJIWARA no Teika.
じつは実家の西四辻家も歌道の家であり、西四辻公業も藤原定家の流れをくむ二条派（三条西家一門）の歌人であった。