During the time of Masutoki (KOMONO), the lord of Yanagawa Castle in Chikugo Province was Muneshige TACHIBANA and they were chief retainers used by the whole family and given the surname `Tachibana`.
増時の時に筑後国柳川城主立花宗茂の家老となり、一族の扱いを受けて立花姓を与えられる。