According to an old Freiburg legend, a butcher named Hauri stabbed the Bishop of Strasbourg to death on 29 July 1299. It was a Pyrrhic victory, since henceforth the citizens of Freiburg had to pay an annual expiation of 300 marks in silver to the count of Freiburg until 1368. In 1366 the counts of Freiburg made another failed attempt to occupy the city during a night raid. Eventually the citizens were fed up with their lords, and in 1368 Freiburg purchased its independence from them. The city turned itself over to the protection of the Habsburgs, who allowed the city to retain a large measure of freedom. Most of the nobles of the city died in the battle of Sempach (1386). The patrician family Schnewlin took control of the city until the guildsmen revolted. The guilds became more powerful than the patricians by 1389.