There don't seem to be any traditional examples that mention Boney, Bonaparte, Collingwood or Marlborough. I rather suspect that those names were stuffed in by revival singers in an attempt to emphasise the (likely) Napoleonic connection, or to make the song sound older than it really is.

The issue with links to the Bodleian site is, I think, just one of those glitches that happen sometimes (most commonly on Sundays in my experience). It will probably be back to normal soon.