heir; successor
family estate; family fortune; inheritance
headship of a family
彼は父の死後、家督を継いだ。
After his father's death, he inherited the family headship.
兄弟の間で激しい家督争いが起きた。
A fierce dispute over the family headship arose among the brothers.
彼は隠居し、長男に家督を譲ることにした。
He retired and decided to hand over the family headship to his eldest son.