Rind by Spells

Kormak said this:

The land-getter, who binds the mast-top straight, honours
the provider of the deities’ fiord [the mead of poetry, whose
provider is the poet] with a head-band. Ygg [Odin] won
Rind by spells.


- Prose Edda, Skaldskaparmal

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As explained earlier in Gylfaginning and further on in Skaldskaparmal, Rind was a Aesir goddess that Odin had a child with. Apparently, some sources call her a giantess instead, but I couldn't find any that did so:

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‘Ali or Vali is the name of one, the son of Odin and Rind. He is
bold in battles and a very good shot.


- Prose Edda, Gylfaginning

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Thor’s mother Iord and Vali’s
mother Rind are reckoned among the Asyniur.


- Prose Edda, Gylfaginning

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Now shall all the Asyniur be named. Frigg and Freyia, Fulla
and Snotra, Gerd and Gefiun, Gna, Lofn, Skadi, lord and
Idunn, Ilm, Bil, Niorun.

Hlin and Nanna, Hnoss, Rind and Siofn, Sol and Saga, Sigyn
and Vor. Then there is Var, and Syn must be named, but
Thrud and Ran reckoned next to them


- Prose Edda, Skaldskaparmal