Swanloga, {Gesta Danorum}

Swanloga is mentioned twice by Saxo:

• " He besought the aid of the brothers Biorn, Fridleif, and Ragbard (for Ragnald, Hwitserk, and Erik, his sons by Swanloga, had not yet reached the age of bearing arms), and went to Sweden."
• "He returned to Denmark, and found that his wife Swanloga had in the meantime died of disease."

https://en.wikisource.org/wiki/The_Danish_History/Book_IX