he objected to the alteration in the succession to the throne to allo w his niece Isabel II to become Queen, and he and his descendants [the y and their partisans were known as the Carlists] fought for the thron e for decades Infant of Spain, Conde de Molina; he objected to the alteration in th e succession to the throne to allow his niece Isabel II to become Quee n, and he and his descendants [they and their partisans were known a s the Carlists] fought for the throne for decades