>After the Norman invasion, the de Cahaines family held the manor from 1166 to the late 13th century as well as others in the country

>The earliest documented person in England bearing the name was William de Cahaignes from Normandy who was born around 1035.

>Surname variants include "Koine", "De Keynes", "Keynes", "de Cayenes", "Caynes", "Caines", "Cheyney", "Cheney", "Chaney", "Chaineis", "Cahaignes", "Casneto", "Caisned", "Casineto".
Dick Cheney and John Maynard Keynes confirmed Normans.