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