of Sigtuna would also appear in the later law of Uppland, and the king used the taxes to buy the services of heavy cavalry that he could use against his own people. It would be several decades before a new tax exempted warrior class appeared in Sweden, and by then, exemption would be a privilege only afforded to the select few who could provide a knight in full armour. The outcome of the battle was notorious enough to be mentioned in both Icelandic and Danish chronicles, and elaborate legends would be told in Sweden until the 17th century. The Uppland Swedes had been transformed from a people that extorted tribute from other peoples, to one that paid taxes themselves. Notes Sources Larsson, Mats G (2002). Götarnas riken : Upptäcktsfärder till Sveriges enande. Bokförlaget Atlantis AB Nationalencyklopedin Sparrsatra 1247 Sparrsatra 1247 in Europe 13th century in Sweden Sparrsatra