Louis"s first marriage was to Maria de Lizarazu in 1358. In 1372, he brought over the Navarrese Company of mercenaries, who had fought with him during the war in France, to assist him in taking Durazzo. Their ranks swelled considerably in 1375 with new recruits directly from Navarre.
Many documents survive telling us of the complex nature of the military planning and engineering which was undertaken to ensure success.
Louis died shortly after.