|Int. Standard Bible Encyclopedia|
sis (Keis): The form given in Acts 13:21 the King James Version for Kish, the father of Saul the first king of Israel (1 Samuel 9:1 f).
Cis (1 Occurrence)
Acts 13:21 And afterward they desired a king: and God gave unto them Saul the son of Cis, a man of the tribe of Benjamin, by the space of forty years. (KJV)