A Habsburg family banquet in Winterthur, held by Albert on the evening of 30 April 1308, gave rise to a scandal, when the invitee John rejected a floral wreath offered by his uncle, exclaiming that he won't let himself be fobbed off with flowers. The next day, King Albert on his way home became separated from his attendants when crossing the Reuss River near Windisch, and was at once attacked by John and his conspirators. John rode toward his uncle and split his skull without a word. He escaped the vengeance of Albert's sons, and from that point his fate remained unknown. In the same year, the prince-electors chose the Luxembourg count Henry VII as Albert's successor, who placed John under the imperial ban ("Reichsacht"). John allegedly fled to Italy and found refuge in a Pisa monastery, where, in 1313, he is said to have been visited by Emperor Henry VII. After the defeat of Albert's son Frederick the Fair at the 1322 Battle of Mühldorf, the Habsburg dynasty was not able to regain the German crown until the election of Albert II in 1438.