Juan Vollmer was married to Antonia Angosto Gómez de Castrillón, who was the daughter of Alejandro Angosto Palma, General of the General Staff. There are some gaps in his intimate and private history, but it is said that he was much more of an adventurer than an entrepreneur. The rescue of allied aviators during the Second World War and of the Germans who tried to reach Spain fleeing from their country. When the collapse of Germany was taking place, he facilitated its collection and protection on the slope of Montoya in the vicinity of Bera de Bidasoa.