In Article September 15 of 1190 which describes the MINAMOTO no Yoritomo's visit to Kyoto, Yukinari was listed as the head of bugyonin (magistrates) who supervised various matters including routes to take, money and other miscellaneous things.
その翌年の1190年（建久元年）9月15日条の源頼朝の上洛では路次の事、貢金、その他全体の雑事を沙汰する諸事奉行人の筆頭に行政の名が見える。