Of Norman origin, derived from Reginaldus, a Latinized form of Reynold influenced by Latin regina ‘queen’. The full form is now regarded as very formal, and bearers generally shorten it to Reg in ordinary usage.
English and French: from a Germanic personal name, Emaurri, composed of the elements amja ‘busy’, ‘industrious’ + rīc ‘power’. The name was introduced into England from France by the Normans. There has been some confusion with Amory.