Camilla. She was the first woman I ran into that would marry me, so we got married. After leveling my speech to 100 and getting the perks associated with it, and pumping 500g into her... She routinely has around 12k on hand to give me for loot on top of that 100g a day she gives me anyway. As a bonus, now that I moved her to Whiterun, her brother also has 11-12k almost all the time, so I never have any issues with shops running out of money.
Not too shabby looking either. Though I did kill that pesky dark elf guy because he was trying to flirt with her too much. Sven is going to get his if he ever leaves the Sleeping Giant Inn too.