Elsa, Anna and Rapunzel...... They ARE cousins....... The King of Arendelle, and the Queen of Corona, are siblings. In frozen when the Queen and King are leaving on the ship to go to a wedding. Well, if you've watch Tangled Ever After you'd understand that they're going to their nieces wedding! They're going to Rapunzel's and Eugene's!!!!!! They never make it back home to tell Elsa or Anna about though...........