When I found the feather in my car, I searched for “Goddesses and feathers” and found that Frigg holds falcons and falcon feathers dear.
Upon further reading, I found some good articles discussing Frigg and Freya, how they are the same in all aspects but name.
Germanic tribes held high esteem for a goddess name Frija. Any research on Frija leads to something along the lines of an earlier version of Frigg and/or Freya. Freya is a title (“lady”, along the lines of Frau) and Frigg is an actual name coming from the ancient root of the word “beloved”.
Likewise, Frigg’s husband is Odin while Freya’s husband is Othr. “Othinn” is Old Norse for Odin and Othr means “ecstasy”. The masculine -inn suffix means “of”, or “one who has” and is the only difference between these two words. Again, Odin would be the name, containing the masculine suffix while Othr is the quality. Looking at the myths, Freya’s husband is described as always wandering and she is always searching for him. Odin is known as the Wanderer.
The seemingly only difference between the two goddess is their levels of promiscuity. Freya, the goddess of love, beauty, and desire, has many partners over many years. It is noted in some sources that she is at a few points in time a consort of Odin (going back to Othr and Odin being the same). Frigg slept with a slave at least one time and was with willingly and joyfully Vili and Ve, Odin’s brothers, while Odin was in exile from Asgard.
Many scholars that I have read place the two as facets of each other- the lover and the mother- two parts of the feminine journey. These two were both aspects seen in Frija in the ancient Germanic tribes, and began to faction into two distinct figures at a point of migration and a social and cultural need for reinterpretation. This metemorphisis was interrupted by the arriveal of Christianity and the destruction of any non-Christian myths.
Given that Frigg is a mother figure, it would not be too much of a stretch to see her being as one in the same of Fjorgyn. Fjorgyn is the Earth Mother deity in Nordic traditions, with an alternate name of Jord. If Frigg is Allmother, it is not too much of a stretch to say that the Allmother is also the Earth Mother and therefore is the actual mother, not step mother, of Thor. Given that the most highly quoted source on Nordic myth is also the least reliable (Snorri Sturluson, 13th C.).