Hi Jill,
Sorry it's taken a while to get back to you; my family and I left for a vacation in the UK the day after you posted and I've only just returned. I also needed a little time to figure how to reply/proceed. My preference however is not to use this public forum to share what I believe my relationship to your grandfather is. I don't mean to sound mysterious but there is a matter of delicacy involved. My email address is mirvine@pxtpayments.com. If you do contact me using that address I will share what I have discovered and how we may be related.