Smith's Bible Dictionary (1863)
The “children of Sia” were a family of Nethinim who returned with Zerubbabel. (Nehemiah 7:47) The name is written Siaha in (Ezra 2:44) and SUD in 1 Esd. 5:29.
Hitchcock's Bible Names (1869)
moving; help
Schaff's Bible Dictionary
SI'A, SI'AHA (congregation), the ancestor of some who returned. Ezr 2:44; Neh 7:47.