Kitabatake Masaie

Kitabatake Masaie (1215–1275) was a court noble of the early to mid-Kamakura period and the founder of the Kitabatake house. He was born the second son of Senior Counselor Minamoto no Michikata, but was treated as a non-heir son while his younger brother Michishige carried on the main line.

Masaie built his residence at Kitabatake north of Kyoto and adopted that place name as his family name. He died in 1275; the house he founded rose to prominence only under his great-grandson Chikafusa.