Hi Geoff and welcome. There was exactly this sort of thread a few weeks back. Ill have a look but I am sure someone will post a link.
Place name conventions...
http://www.cartographersguild.com/regional-world-mapping/1151-hand-drawn-map-tips-post9546.html - try whole thread but this post is linked.
So I went searching for Name Generators... - auto name gens
Introduction / my efforts
But if you come up with a grand codex of historical place names then post more links.