Fausset's Bible Dictionary
1. Son of Ammihud, of the children of Pharez of Judah (1 Chronicles 9:4), called Athaiah son of Uzziah, Nehemiah 11:4; dwelt in Jerusalem on the return from Babylon.
2. Son of Bigvai; returned in the second caravan with Ezra (Ezra 8:14).
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Fausset, Andrew R. Entry for 'Uthai'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/u/uthai.html. 1949.