Wikipedia
Abishua
Abishua was an early High priest of Israel.
Abishua is mentioned in the books 1 Chronicles (6:35) and Ezra (7:5) as the son of the High Priest Phinehas, son of Eleazar. As such, he is the great-grandson of Aaron, the brother of Moses and first High Priest.
According to Josephus and other extrabiblical sources, he succeeded his father as High Priest.