The Chronicle of Alberic de Trois-Fontaines names "Stephano…de Vallibus iuxta abbatiam Sancti Urbani", specifying that he was a supporter of Engelbert de Brienne in the war of Boulogne, became "comes Ioviniaci" by right of his wife after the death of his mother-in-law (although no record has been found that Etienne bore the title comte de Joigny, it being probable that this reference results from confusion between the names Joigny and Joinville), and started building the first castle of Joinville with the help of his father-in-law.
Seigneur de Joinville. He acquired the avouerie of the abbey of Saint-Urbain. Hermann Bishop of Toul threatened "Stephano Novi-Castelli domino" with excommunication, for having invaded property of the monks of Saint-Blin at Augéville, by letter dated 1018. Robert II King of France required "miles Stephanus de Junci-villa" to restore property to the abbey of Montiérender, by charter dated 15 May 1027. 2
Research Notes: