Nanbu Masayuki

Nanbu Masayuki, also called Jirō Yukinaga, was a mid-Kamakura warrior and the second son of Nanbu Tokizane, third head of the Sannohe Nanbu clan. Later genealogies name him ancestor of the Higashi clan.

They record that he married into the Kudō clan, while Nanbu family documents make his wife a daughter of Nanbu Sanetsugu. His sons were Tokinaga, Moroyuki, Masanaga and Sukeyuki, who later disputed the landed legacy of their grandfather Tokizane.