At the time of the Rebellion at Honnoji, Suketada fell under the umbtrlla of Mitsuhide AKECHI, who had taken control of Omi region, and even went fight in the battle in the Yamazaki region, but was defeated.
本能寺の変が起こると近江を制圧した明智光秀の傘下に入り山崎へも出陣したが、敗北。