Hello Keziah2,
Thanks for replying. The name I thought I had put in the post was Noah Key, but that important detail seems to have been omitted somehow. My computer has a bad habit of doing that without my noticing, sorry! The casualty return just says that Noah Key was a gardener who came from Worlingham Suffolk. I don't think he was buried there as he died in Spain, and I am just guessing that he might have been born around 1770-1780, as we believe he somehow got married in Ireland in 1803, shortly before he enlisted, but don't know any more about his earlier life, and the return doesn't give his age anywhere. I've been to TNA and searched through all the relevant muster rolls there and haven't managed to find out anything else so far.