Complex sentence: During the wedding ceremony of his daughter in 1559, he was stabbed by his son, whereupon the rule of Schwarzenberg was transferred to Hans Raphael Reischach as a fief in 1560.
Split into simpler sentences: During the wedding ceremony of his daughter in 1559 he was stabbed by his son. Thereupon the rule of Schwarzenberg was transferred to Hans Raphael Reischach as a fief in 1560.