The Gesta Danorum (Books I-IX) on Borgar
The Danish History, > Book Seven.
attestation: Alf's comrade Borgar struck off Alfhild's helmet during the sea-fight, revealing her sex, and declared they must fight with kisses not spears
"His comrade Borgar struck off Alfhild's helmet, and, seeing the smoothness of her chin, saw that he must fight with kisses and not with arms"
attestation: Borgar married Alfhild's attendant Groa and had a son Harald surnamed Hyldeland
"Borgar wedded the attendant of Alfhild, Groa, and had by her a son, Harald, to whom the following age gave the surname Hyldeland."
attestation: Borgar arrived with Skanian cavalry and slaughtered the remaining enemy, then pursued the son of Hamund with the captured ships
"Borgar, with Skanian chivalry suddenly came up and slaughtered a multitude of them"
attestation: Borgar discovered Drota's cave while roaming the countryside and married her in secret
"Meanwhile Borgar, finding that Gunnar had married Drota, the daughter of Ragnald, by violence, took from him both life and wife, and wedded Drota himself."