1911 Encyclopædia Britannica/Frederick
FREDERICK (Mod. Ger. Friedrich; Ital. Federigo; Fr. Frédéric and Fédéric; M.H.G. Friderîch; O.H.G. Fridurîh, “king or lord of peace,” from O.H.G. fridu, A.S. frith, “peace,” and rîh “rich,” “a ruler,” for derivation of which see Henry), a Christian name borne by many European sovereigns and princes, the more important of whom are given below in the following order:—(1) Roman emperors and German kings; (2) other kings in the alphabetical order of their states; (3) other reigning princes in the same order.