Amazing Grace Lyrics

Lyric discussion by 4.Ever and a day 

Cover art for Amazing Grace lyrics by Various Artists

I heard somewhere that the guy who wrote this was a slave seller, a guy that went to Africa, got slaves, and sold them in the Americas, and that during one of his trips, they hit a deadly storm, and he prayed to God that he would become a holy man and return the slaves if the storm went away. Guess what happened? The skies cleared, and he turned around, dropped the slaves back in Africa (I wonder if they ever got back to their tribes) went back to England and became a priest. Is that right? I'm pretty sure it is.