Dereck

Dereck is an English given name and a variant spelling of Derek, which derives from the medieval Dutch and Low German name Diederik, itself a form of Theodoric. Theodoric comes from the Germanic elements theud, meaning people or nation, and ric, meaning power or ruler, giving the overall sense of ruler of the people. The name was brought to England through Flemish cloth traders during the medieval period and became well established there. Other spelling variants include Derick, Derrick, and Deryck.