Prince Ernst Heinrich of Saxony
Ernst Heinrich was the youngest son of the last King of Saxony , Frederick Augustus III , and his wife Archduchess Luise of Austria , Princess of Tuscany . 
<triplet> Frederick Augustus III <subj> Archduchess Luise of Austria, Princess of Tuscany <obj> spouse <triplet> Archduchess Luise of Austria, Princess of Tuscany <subj> Frederick Augustus III <obj> spouse