Looking for a McKay - emigrated from Ulster

[PPS]

On behalf of a good friend I am asking for assistance in trying to track down an Uncle of his, of whom he knows next to nothing.

The person in question is a man by the name of "Sonny" McKay, who may have passed away by now. He emigrated to Canada sometime before World War 2 from the Limavady area of Northern Ireland. It is thought that his proper first name was John, as my frien thinks he was named after him.

From what has been said within the family it is thought that he joined the Canadian forces around the start of WW2, although which branch is not known (more about this later).

He was apparently made a POW by the Japanese in the Far East, and suffered serious injury and abuse, and it is said that his tongue was cut out by his captors at some stage.

He survived the punishment and returned to Canada, stopping off in Limavady for a time, on release from captivity. Because he was made a POW it is suggested that he joined the Army, although this is not certain. It is also said that he became a taxi driver, location not known.

I have looked at a number of sites in trying to find this person with no success, and turn to those with a better knowledge of Canada for assistance.

Any help in finding details for my friend would be most appreciated, even places to look/ask will be of help, as I would like to help my friend in his search.

Paul