Core Q&A Expanded Answer
Freyr is a Vanir god from Vanaheim, one of the nine realms of the World Tree, Yggdrasil, who is associated with fertility, prosperity, peace, and harmony with nature. Though the Vanir are distinct from the Æsir, he is a major divine power within the Norse order. His sister, Freyja, is the Vanir Goddess of fate and a master of their seiðr fate magic.