Education
From 1807 to 1810 he studied law in Paris and in the same year became a lawyer in Luxembourg City.
From 1807 to 1810 he studied law in Paris and in the same year became a lawyer in Luxembourg City.
He led the Orangist movement and was the first Prime Minister of Luxembourg, serving for four months, from 1 August 1848 until 6 December of the same year. When the Belgian Revolution broke out, he supported William I, and was appointed to the government commission that controlled Luxembourg City. From 1841 to 1848 he was the governor of the Grand-Duchy.
On 1 August 1848 he became the first head of government of Luxembourg and was also responsible for the areas of foreign affairs, justice, and culture.
The government fell on 2 December 1849. In 1857 he was appointed the first president of the newly established Council of State, which he remained for 11 years.
His two other sons were the botanist Léon de la Fontaine and the zoologist Alphonse de la Fontaine.
In 1816 he became a member of the États provinciaux. De la Fontaine was from 1849 to 1851 a member of the council of Luxembourg City.
