Hi Amanda,
Since my last post i.e. 10 years ago - nothing new (unfortunately) has come to light. I've not come across that name - John... and I'd only associated Dannie / Danhi, Danhi (prononced Dan-eye) - with Indians... and I've located them in Jamaica, Guyana and Canada...
Sadly, the trail runs cold.
Lisa
booglesb@yahoo.com