Cnebba
Cnebba was king of Mercia from.
Cnebba was the only son of Icel of Mercia. He had a son called Cynewald who succeeded him as king and reigned from, according to the Anglo Saxon Chronicle
It has been suggested that the village of Knebworth was named after Cnebba as Ickleton is suggested to be named after Icel of Mercia.