Pierre d'Arc (1408–1467) was a French soldier whose place in history is due to his service in the army made famous by his younger sister Joan of Arc.
The youngest son of Jacques d'Arc and Isabelle Romée, Pierre and his older brother Jéan fought under their sister's banner at the Siege of Orléans.
[2] In 1434, Pierre and Jéan temporarily accepted Jeanne des Armoises (whose real name was Claude) as the actual Joan.
[6] Scholar François de Bouteiller determined that Joan's great-great nephew Charles du Lys (d. 1632) was the "last remaining male of the line".
[7] Clotilde's great-great-grandfather Henri Gautier renamed his children "d'Arc" after Charles X granted him an Ordonnance Royale in 1827.