Prince Leopold Clement was the elder child and only son born in the troubled marriage of Princess Louise of Belgium and Prince Philipp of Saxe-Coburg and Gotha, both of whom were Roman Catholic members of the House of Saxe-Coburg and Gotha. He shared his name with his maternal grandfather, King Leopold II of Belgium, and a number of other Coburger relatives. Prince Leopold Clement was the sole heir to the wealth his father's family had inherited from their ancestress, Princess Maria Antonia Koháry.
