Ansel

Prince Ansel of Arendelle is one of the seven adopted sons of Queen Elsa and in line for the throne of Arendelle.

History
Olaf was adopted first by the Queen, followed by Mars three days later. It was three months after that, Ansel, Crystal, Sphere, William and Pat were all adopted at the same time.

Out of the seven adopted sons, Ansel is third eldest and so third in line for the throne.