TATTENAI.The name of the governor of Cle-Syria and Phnicia under Darius Hystaspis (Ezr_5:3; Ezr_5:6; Ezr_6:6; Ezr_6:13). He is called in 1Es_6:3; 1Es_6:7; 1Es_6:27 (26) 1Es_7:1 Sisinnes, which is simply a reproduction in Greek of a Persian name Thithinaia (orig. Thathanaia?), with aspirated t.
Hastings' Dictionary of the Bible
Edited by James Hastings, D.D. Published in 1909
tat?e-nı̄ (תּתּני, tattenay, various forms in the Septuagint; the King James Version Tatnai, tat?nı̄, tat?nā́-ı̄): A Persian governor, who was the successor of Rehum in Samaria and some other provinces belonging to Judah, bordering on Samaria. He governed the provinces during the reign of Darius Hystaspis and Zerubbabel (Ezr_5:3, Ezr_5:6; Ezr_6:6, Ezr_6:13). He was friendly to the Jews, and when he heard adverse reports from Jerusalem he suspended judgment till he had investigated the matter on the ground, and then reported to the Persian government in a very moderate manner. In 1 Esdras 6:3, 7, 27; 7:1 he is called ?Sisinnes.?
International Standard Bible Encyclopedia
PRINTER 1915.