Napoleon's son, Napoleon François Charles Joseph Bonaparte, was also known as the Roi de Rome (King of Rome) and was the first legitimate son of Napoleon I and Empress Marie-Louise
. He was born in 1811 and spent only the initial years of his life in France. After the Battle of Waterloo and his father's final defeat, he was separated from Napoleon and lived the rest of his days in Austria
. He died of tuberculosis at the age of 21 in Schönbrunn Palace in Vienna
