The website Find a Grave has searchable details of 626 graves in Sidmouth Cemetery.
Details can be seen on this page

A correspondent wrote ‘The cemetery is a very special place for myself and my children as we spent much of lockdowns in there for our daily walks. I love walking through there. Thank you so much for caring for it.’ and also told us a story about a grave they had found ‘I took many photos of the headstones to ‘look up’ when I got home. One particular one, was of a Colonel who was en route with his Argentinian wife back to America. They stopped in Sidmouth and, unfortunately, he died of a tropical disease. I found his family on Ancestry and sent them a pic of his headstone. So many fascinating stories.’ Sadly, although we wrote back, no further details were forthcoming, if you know more then let us know!