I was just playing campaign on xl as english, and about halfway through early era was attacked by a massive danish army in Flanders lead by their king, my army mainly made up of saxon huscarles and norman knights smashed through the viking infantry, but i then managed to circle completely and in the chain rout captured the danish king, 4 princes, several nobles, and around 700 normal men, the danes then paid up giving me 20,000 florins for my effort (which for me is huge as im not very good at the whole money thing...)

anyhow, i'd be interested to know what the largest ransom money amounts you've gained....