He was born in 1905 to Joseph of Saxe-Coburg-Gotha and Princess Caroline of Brunant. His mother died giving birth to him. His father married the future Queen Lucy I of Lovia, and she adopted him in 1911. He was raised alongside the future King Lucas I and King Arthur III. In 1946, he married Juliana Gábor, a descendant of a Hungarian count, and had two children. His daughter Lucy Carolineis named in honor of his natural and adoptive mothers. He is the grandfather to Princess Amalia, who is fifth in line to the throne of Brunant, and an uncle of King Dimitri I.