Complex sentence: Birthright was handed over by father and became the present head of a household, but he participated in a Mikawa Kuni Tahara Castle attack according to Yoshimoto Imagawa in 1542 and was killed in action.
Split into simpler sentences: Birthright was handed over by his father and he became the present head of a household. He participated in a Mikawa Kuni Tahara Castle attack according to Yoshimoto Imagawa in 1542 and was killed in action.