Abishua in Wikipedia

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 priestPhinehas, 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.

Link: https://en.wikipedia.org/wiki/Abishua