Complex sentence: Following the death of Maria Emanuel in July 2012, Prince Albert (who died in October) assumed the position of head of the Royal House of Saxony, while Alexander citing the 1997 agreement has done the same.
Split into simpler sentences: Following the death of Maria Emanuel in July 2012, Prince Albert has assumed the position of head of the Royal House of Saxony. While Alexander citing the 1997 agreement has done the same.