Born: August 10, 1872
Died: January 15, 1949 (age 76 years), Lausanne, Switzerland
Children: Princess Lydia d'Arenberg and Erik, 11th of Arenberg
Great-grandparent: Louis Engelbert, 6th Duke of Arenberg
Grandparent: Prosper Louis, 7th Duke of Arenberg
Parents: Engelbert, 8th Duke of Arenberg
Partner: Princess Hedwige de Ligne (1897–)