Easton's Bible Dictionary (1897)
O sun-god, defend the lord! (Ezra 1:8, 11), probably another name for Zerubbabel (q.v.), Ezra 2:2; Hag. 1:12, 14; Zech. 4:6, 10.
Smith's Bible Dictionary (1863)
(worshipper of fire), the Chaldean or Persian name given to Zerubbabel in (Ezra 1:8,11; 6:14,18) [Zerubbabel]
Hastings' Dictionary of the Bible (1898) & Schaff's Bible Dictionary
SHESHBAZ'ZAR (fire-worshipper), the Persian name borne by Zerubbabel at the Persian court. Ezr 1:8, Rev 1:11; Neh 5:14. Heb 5:16.
Hitchcock's Bible Names (1869)
joy in tribulation; joy of the vintage