This world-famous song was written in Olney in 1772 by John Newton, who while working on a slave ship had an epiphany and became a curate working to outlaw the slave trade.
Amazing grace! (how sweet the sound)
That sav’d a wretch like me!
I once was lost, but now am found,
Was blind, but now I see.
’Twas grace that taught my heart to fear,
And grace my fears reliev’d;
How precious did that grace appear,
The hour I first believ’d!