 In Norse mythology , Iðunn is a goddess associated with apples and youth . Iðunn is attested in the Poetic Edda , compiled in the 13th century from earlier traditional sources , and the Prose Edda , written in the 13th century by Snorri Sturluson . In both sources , she is described as the wife of the skaldic god Bragi , and in the Prose Edda , also as a keeper of apples and granter of eternal youthfulness . 
