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.
SIA
Meaning of SIA in English
Smith's Bible English dictionary. Английский библейский словарь Смита. 2012