How do I know when to use Jon and I, or Jon and me? I can't really figure it out. I've tried to teach myself, but I just can't seem to do it. Will someone please help me figure this problem out?
grammar - Jon and I or Jon and me? - English Language & Usage Stack ...
From this, I would tentatively conclude that (1.) the vernacular pronunciation of the name became a single-syllable "Jon" fairly early on, and (2.) the John spelling might have originally been a Latin-language abbreviation, but it came to be used as the standard vernacular spelling because it matched the vernacular pronunciation.