Zedekiah was the High Priest of Solomon's Temple that succeeded Pediah. According to Josephus Zedekiah (Sudeas) was the son of Pediah (Phideas). He also appears in the High Priest list of the medieval chronicle Seder 'Olam Zuta. Zedekiah is never mentioned in the Bible, his name doesn't appear in the Zadokite genealogy given in 1 Chr. 5:30-40 (6:4-15 in other translations).
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Zedekiah (high priest) Wikipedia(Text) CC BY-SA