Rhydderch

This old, proud name is a patronymic name created from the Welsh personal name Rhydderc, Riderch, or Roderick, all of which mean "reddish-brown." The surname Rhydderch features the distinctive Welsh patronymic prefix "ap-," which means "son of." The original form of the name was ap-Rhydderc, or ap-Riderch, but the prefix has been assimilated into the surname over the course of time.