It is said that the Hirano clan which appears in the medieval period as an offspring of the Sakanoue clan is not descended from Masamichi but from Hirono's son SAKANOUE no Mineo (Chamberlain), his grandson SAKANOUE no 峯盆 (Kiyomizu-dera betto [Chief Priest at Kiyomizu-dera Temple] and Dewa no Gon no Suke [provisional vice governor of Dewa Province]), and his great-grandson SAKANOUE no Yukimatsu (his first name could be Yukimasu)(Akita-jo no suke gonnokami [provincial governor of Akita-jo Castle, and provisional governor of Dewa Province).
中世に平野庄の坂上氏の後裔として登場する平野氏は、当道の系統ではなく、広野の子の坂上峯雄（侍従）、孫の坂上峯盆（清水寺別当、出羽権介）、曾孫の坂上行松（行増、秋田城介権守）の流れを汲むと伝えている。