Miraz's son

The Son of Miraz was the unnamed son of King Miraz and Queen Prunaprismia. He was the younger cousin of Caspian X. He was born in 2303. His Father, Miraz, was killed by Lord Sopespian

Trivia
In the Disney adaptation of Prince Caspian, he leaves with his mother to the deserted island in the South Pacific. His name was Miraz II.