Hervor is the name of two female characters in the cycle of the magic sword Tyrfing, presented in Hervarar saga with parts found in the Poetic Edda. One, the viking Hervör, challenged her father Angantýr's ghost in his gravemound for his cursed sword Tyrfing, and bore Heithrek, father of the other Hervör, a commander killed in battle with her brother. The two are thought by some academics to be the same character, duplicated.
Additionally, Hervor is the name of a valkyrie married by Völund in the Poetic Edda poem Völundarkviða, see Hervör alvitr.
Hervor was born after her father Angantyr's death (he died during a duel against the Swedish hero Hjalmar) to his wife Svafa, who was daughter of a Jarl Bjarmar. Rather than take on sewing or be raised as a bond-maid like other girls, Hervor proved to be as strong as the boys and learned archery, swordsmanship, and horse riding.
She dressed like a man, fought, killed and pillaged under her male surname Hjörvard. When she learned of her father's identity she decided to live as her father and to find Tyrfing, the magic sword.
See Hervararkviða One day, she arrived with her fleet to Munarvágr on Samsø (Samsey), but she was the only one who dared to embark on the haunted island. The remainder of her crew feared the nightly activities around the barrows on the island. As she approached the barrows she saw a fire shining above them, and she approached the largest one. She then talked with a loud voice summoning her father Angantyr to reveal himself. She said that as his daughter she was entitled to her rightful inheritance, Tyrfing. Then, she also summoned her eleven uncles and she did so with such a loud voice and such harsh words that finally, her father's voice was heard and he asked not to pursue her quest. She did not give in but continued to ask for her rightful inheritance.