The Baby Name Wizard

Origin of the name Eloise:

Of uncertain origin and meaning, some believe it is from the Germanic Helewidis, a compound name composed of the elements haila (hale, hearty, sound) and vid (wide). Others believe it is a feminine form of Louis, which is from the Old High German Hluodowig (famous in war), a compound name composed from the elements hluod (famous) and wīga (war): hence, "famous in war." The name was borne by the wife (d. 1164) of French theologian Peter Abelard (1079 - 1142) whose secret marriage was avenged by Eloise's uncle in the manner of Abelard being beaten and castrated. He became a monk and Eloise became an abbess of a nunnery.