Dieudonné was born in Stuttgart, as the son of a principal court ballet dancer, and trained in Vienna with the piano builder Nannette Streicher.
In Vienna, he is also assumed to have met Schiedmayer, whose cousin he later married.
[1] They founded the firm in 1806, and eventually became court suppliers ("Hoflieferant").
[1] In 1824, shortly before his death, Schiedmayer and Dieudonné published a brief manual "on the proper use and knowledge concerning the playing, tuning, and maintenance of fortepianos, especially those made in the workshop of Dieudonné and Schiedmayer in Stuttgart".
[3] Pianos built by Dieudonné and Schiedmayer are believed to be in museums in Stuttgart, Tübingen, Donaueschingen, Basel, Munich, Liège and other locations.