Who is Ibzan from The Bible?

The correct spelling is Ibzan and he was a Judge in Israel. The bible doesn't say much of him except he had 35 sons and 30 daughters and he died in Bethlehem.

Answer:
According to the tradition of our sages, this Ivtzan (Ibzan) was identical with Boaz from the book of Ruth and was an ancestor of King David. Talmud, Bava Batra 91a.