It is generally believed that the party were descendants of ONO no Takamura; however, Motohisa YASUDA carefully examined family trees, and calculated the number of years among generations, and studied appointments of kokushi (provincial governors) at that time, and consequently thought that this was contrived by later generations, and the party were actually descendants of kaihatsu-ryoshu (local notables who actually developed the land), and passively supported a view that the party may have been descendants of Musashinokuni-no-MIYATSUKO, which is a view found in the "Seishi Kakei Jiten" (Dictionary of Family Names and Lineages in Japan) by Akira OTA.
小野篁の後裔といわれているが、安田元久は諸系図の精査や世代間の年数の計算、当時の国司の任命状況から見て後世の作為で、実際は在地の開発領主の末裔であろうと推測し、太田亮の『姓氏家系辞典』での所見である武蔵国造の末裔ではないかという見解を消極的に支持している。