WARNING: Potential Spoilers Below!
Name: Asa Ragnvaldardottir
Nickname: Asa Eidhsvardhkona, Asa Oathkeeper
Cultural Background: Northmenn (from Vestfold in Noregur)
Born: 855 N.Y. (Norrani Year) (born in The Saga of Asa Oathkeeper)
Parents: King Ragnvaldur hinn Heidhumhaeri (Ragnvaldur the Mountain-High) of Vestfold (father)
Noble House: descended from the Ynglingar
Spouse: Eysteinn Glumra (Eysteinn the Noisy, Eysteinn the Clatterer) of Urkneyjar (married in The Saga of Asa Oathkeeper)
Appears In: The Saga of Asa Oathkeeper (June 2015)
Source: Mostly the creation of the author, Colin Anders Brodd, although there are some references, perhaps spurious, to a daughter of Ragnvaldr named "Asa."