Iduna

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

in Norse mythology, is the loveliest of the Asas, the goddess of eternal youth and immortality; not created or born, but existing from the beginning. She is the wife of the wise Braga, the god of the poetic art. In her keeping are the apples of rejuvenation, without which even the gods would become aged, therefore they daily eat the same.

The Nuttall Encyclopedia

A Scandinavian goddess who kept a box of golden apples which the gods tasted when they wished to renew their youth; she was carried off one day, but being sent for by the gods, came back changed into a falcon.