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
2 verses
Ezra
Ezra 2:44
The children of Keros, the children of Siaha, the children of Padon,
Nehemiah
Nehemiah 7:47
The children of Keros, the children of Sia, the children of Padon,
From Smith's Bible Dictionary
William Smith, 1884