I made a mistake in my original subject line, which the site won't let me edit - I made the correction in my next post, but the original with error is the one carrying through on the subject line in responses -
for anyone else who wants to respond, the final name I'm seeking is R.M. Hay, not William.R.M. HAY was married to Charlotte EWART.The William I'm seeking was their son.
I apologize for this confusion, it's my error.Thanks so much for the responses so far.