Leo

Leo derives from the Latin word leo, meaning lion, which was itself borrowed from Greek leon. The name was borne by a long line of popes, beginning with Leo I in the fifth century, whose theological influence gave the name enduring prestige throughout Christian Europe. It remains in common use across numerous languages and cultures, appearing in French as Léo, Hungarian and Icelandic as Leó, and serving as a short form of names such as Leon, Leonard, and Leopold.