The Gesta Danorum (Books I-IX) on Groa
The Danish History, > Book One.
attestation: Groa was the daughter of Sigtryg, King of the Swedes, and encountered Gram while riding to the forest pools to bathe.
"Groa herself riding with a very small escort of women on foot, and making her way, as it chanced, to the forest-pools to bathe"
attestation: Groa warned Gram's party that Sigtryg would vanquish them and doom their corpses to the hungry raven.
"Turn your feet and go back hence, lest Sigtryg vanquish you all with his own array, and fasten you to a cruel stake"
attestation: Groa expressed horror at the thought of mating with giants, declaring that love between humans and monsters was unnatural.
"Who so mad as to wish to be the leman of giants? Or what woman could love the bed that genders monsters?"