I found some more information on David H Galley. He was the Chief Cook on the Nathanael Greene and he died on November 27 while on the Hospital Ship HMHS Amarapoora which was then based at Scapa Flow. He had a “Fractured Spine with Paraphlegia”. I assume he got to Scapa Flow on one of the escort ships that took on casualties from PQ18.
http://clydeserver.com/shipping/viewtopic.php?t=36934
He was first buried at Lyness Imperial War Graves Cemetery Scapa Flow). Ancestry as about 30 pages of documents that relate to his death. They come from a file called “Reports of Deaths of American Citizens Abroad”. For those with Ancestry access here is a link to one of the pages in the file:
https://www.ancestry.com/imageviewer...DsuccessSource
You can move forward and back from that page.
The file also has, for example, deaths of Americans who served in the RCAF or RAF, so it might be of future use.