The Gesta Danorum (Books I-IX) on Agnar
The Danish History, > Book Two
relationship: Agnar son of Ingild was betrothed to Rute, sister of Rolf, and held a bridal banquet
"a certain Agnar, son of Ingild, being about to wed Rute, the sister of Rolf, celebrated his bridal with a great banquet"
attestation: Agnar fought Bjarke in a duel over the disrupted feast; Agnar struck first so hard his sword stuck in Bjarke's helmet
"the blow which he dealt is said to have been so furious, that he cut through the front of the helmet, wounded the skin on the scalp, and had to let go his sword, which became locked in the vizor-holes"
attestation: Agnar's sword Hoding shattered against Bjarke's head but failed to cut deep; Bjarke cleaved apart Agnar's left arm, side, and right foot
"He shattered and broke with the bite the sword Hoding which smote upon my head"
The Danish History, > Book Nine.
- attestation: Agnar and his brother fought independently and were killed in battle against the Swedes
"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."