Complex sentence: The name Rickmansworth comes from the Saxon name "Ryckmer", the local magnate, and "worth" meaning farm or stockade but there was a settlement in this part of the Colne valley in the Stone age.
Split into simpler sentences: The name Rickmansworth comes from the Saxon name "Ryckmer", the local magnate, and "worth" meaning farm or stockade. There was a settlement in this part of the Colne valley in the Stone age.