Lord Emsworth
Emperor
Presumably this was inspired by the "how much cash can you get in a single game" challenge I saw in the strategy forum a while back. I suppose it was tough to have 10m burning a hole in your pocket and culture seemed a sensible thing to spend it on.
Plausible, but not quite true. I had known about ways to conjure up lots of cash before. It wasn't until some HoF-gauntlet (Chieftain-Large-Score) that I realized just how well this can be done on the lower levels. The immediate result was a 690AD 100K win.
(As far as I remember the "How much cash" thread (it was Bartleby who had to point me to it) the challenge was rather to do it without exploitive means anyway.)