Complex sentence: Louise-Marie Amélie, Princess of Belgium, later by marriage Princess of Saxe-Coburg and Gotha (18 February 1858 in Brussels--1 March 1924 in Wiesbaden) was the eldest daughter of King Leopold II of Belgium and his wife Marie Henriette of Austria.
Split into simpler sentences: Louise-Marie Amélie, Princess of Belgium, later by marriage Princess of Saxe-Coburg and Gotha, (Brussels 18 February 1858-1 March 1924 Wiesbaden). She was the eldest daughter of King Leopold II of Belgium and his wife Marie Henriette of Austria.