Tadamune was named his father's heir, as he was the son of one of Masamune's formal wives, while his elder half-brother, [[Date Hidemune]], was the son of a concubine and thus less eligible to become heir. Hidemune became lord of the smaller branch [[han|domain]] of [[Uwajima han]], while Tadamune went on to become lord of Sendai following Masamune's death in [[1636]]. | Tadamune was named his father's heir, as he was the son of one of Masamune's formal wives, while his elder half-brother, [[Date Hidemune]], was the son of a concubine and thus less eligible to become heir. Hidemune became lord of the smaller branch [[han|domain]] of [[Uwajima han]], while Tadamune went on to become lord of Sendai following Masamune's death in [[1636]]. |