No, you are mixing them up. "Ye" is the old version of the word "You" and "hath" is the old version of the word "has". Ye people of the north is like You people of the north.
Thy = Your
Thou = formal word for You when addressing God or someone superior
Ye = Plural version of You
Read a little Shakespeare or the old King James Version of the Bible and you'll catch on eventually.