The Egil's Saga on Kari of Berdla
Chapter 1 - Of Kveldulf and his sons.
attestation: Kari of Berdla was Ulf's companion in freebooting, known for strength and daring, and was a Berserk
"In fellowship with him was one Kari of Berdla, a man of renown for strength and daring; he was a Berserk."
relationship: Kari of Berdla had three children: sons Eyvind Lambi and Aulvir Hnuf, and daughter Salbjorg
"Three children had Kari, one son named Eyvind Lambi, another Aulvir Hnuf, and a daughter Salbjorg"
Chapter 1 - Of Kveldulf and his sons. > Chapter 4 - Battle of king Harold and Audbjorn.
- attestation: Kari of Berdla joined Earl Rognvald with a longship and then went to serve Harold at Throndheim
"Karl of Berdla came to earl Rognvald with a long-ship fully manned, and they two went north to Mæra. Rognvald took the ships that had belonged to Vemund"
Chapter 1 - Of Kveldulf and his sons. > Chapter 8 - Of Bard and Thorolf.
- attestation: Kari of Berdla and Eyvind Lambi returned home south after leaving Thorolf at court
"Kari of Berdla and his son Eyvind Lambi went back south in the ship which Thorolf had brought north, and so home to Kari's farm."