Hi I looked in the Com. War Graves site belowhttp://www.cwgc.org/search/SearchResults.aspx?surname=keyt&a...
and there is a keyt mentioned as dying in Rangoon..
This is a useful site for searching in Asia for war dead..
Also you might find it useful if you contact your Red Cross branch near you and see if they have records of the time anyone might have been a prisoner of war..I found my fathers records of his time in Changi and Sime Road prison of war camp,,He was a civilian..and his records were in Melbourne Red Cross as that is where we were evacuated to from Singapore.
Hope this might help a little..If you live in the UK Kew might also be a good bet..