Jaunez ceramics factory in Sarreguemines, which was co-founded by his father and his grand uncles, Charles Joseph and Maximilian Utzschneider, in 1864.
He was elected to the Reichstag of the German Empire in June 1903 as a representative of Metz-Campagne and served as a member of parliament until January 1907.
[3][4] In 1903, Jaunez married the French aristocratic singer Jeanne de Montagnac in Paris.
Jaunez married secondly, in 1927, Florrie King, who was the daughter of a coal miner from Hunslet, Yorkshire.
[6] In 1917, during the start of the First World War, Jaunez emigrated to Switzerland and was stripped of his German citizenship.