Robert Arthur Noble, also known as Crown Prince Robert of Lovia (1894-1938), was the eldest son of Arthur II of Lovia, and Queen Lucy's younger twin brother. Despite an initial dispute about whether Lucy or Robert would inherit the throne, his poor relationship with his father and adherence to Marxist-Leninist views resulted in him renouncing all claim to the Lovian throne and then leaving Lovia for good. After volunteering in the Spanish Civil War, he was killed in 1938 on his 44th birthday.