Lanefan
Victoria Rules
In said Arthurian romance game, however, I'd like to think nobility or a castle would be something a character could aspire to as an any-term-length goal; and maybe having (or gathering) lots of money might be one of numerous avenues toward achieving said goal.There are assumptions here that are open to contest.
For instance, in a game of Arthurian romance, it's not clear that nobility, or a castle, is just something that you can buy.
Buying noble titles was certainly a thing in the real world.