Yeah, I've been wondering the same thing for a while. Why the name Granleon? At first I thought it was the name of a famous/legendary sword, like the Masamune, but that thought lead to a dead end. So I guess Chrono'99's theory of it being a play on the phrase Grand Lion is probably correct. In addition to the Persian symbolism which he mentioned the slight alteration of words also has other presidents in Chrono Trigger, the clearest examples being Mao's (Magus') 3 great generals: Vinnagar (Ozzie), Mayonay (Flea), and Soysaw (Slash).