I will put you in touch with Billy McGee - he too is interested in ensuring that the right date is recorded at CWGC (he's still working with them). Do I have your permission to give him your E-mail address? (as a moderator of this forum I'm able to see what it is). It's also possible, of course, that your uncle died of other causes, unrelated to the loss of the ship.

Regards Siri
(warsailors.com)