Thanks, I'll try all of those. I've actually just found a reference to someone who I think may be his father (same post, same name) in this book: English Army Lists and Commission Registers, ed. Charles Dalton, F.R.G.S. Vol. V. 1702-1707. Alas, it is a Google digitisation and the reference is very mangled. If anyone who comes across this post knows where a better digitisation might be found, please let me know!