Gróa married Aurvandil the Bold, and their son Svipdag later invoked her spirit from the grave for protective charms. Thor brought news of Aurvandil's safe return while Gróa was healing him, breaking her concentration on the spell.
In the Grógaldr, Svipdag raises his dead mother Gróa from her burial mound through necromancy. Gróa's shade sings nine protective galdr spells over him before he departs on his quest for Menglöð.
After Thor's duel with Hrungnir, the völva Gróa attempted to sing the lodged whetstone from Thor's skull using galdr magic but stopped when Thor's news of her husband Aurvandil broke her concentration.
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