oomis: Yehuda Aryeh Leib – there are a few different combinations of theses names that are used and they all mean the same thing.
IMHO, a yiddish name is really a tone of endearment. If you think about it, when you walk into a chassidishe neighborhood, almost everyone with a yiddish name has “ee” added to the end. Like Faigy, Shprintzy, Yitty, Heshy, Leiby, etc.. While a hebrew name has more meaning behind it.