Therefore, he created only a short genealogy starting from his grandfather Yasuakira WAKIZAKA and submitted it with a waka poet on the top: 'I do not know if my ancestor was from the Northern House or Southern House, or even the Capital House or the Ceremonial House of the Fujiwara clan, but my grandfather began to identify himself as an ancestor of the Fujiwara clan as it happens.'
このため、祖父脇坂安明からの短い系図のみを作り、冒頭に「北南それとも知らずこの糸のゆかりばかりの末の藤原」（北家・南家ひいては京家、式家いずれかは判りませんが、父祖よりたまたま藤原氏の末裔を名乗っております）という和歌をしたためて提出したという。