See Brown, Abbie Farewell et al, Norse Mythology: Tales of the Gods, Sagas and Heroes, Arcturus, 2018
Women of Note
Signy - Daughter of Volsung and twin sister of Sigmund. She is forced to marry Siggeir, the antagonist.He's mad because Sigmund pulled the sword from the tree. Her brothers are captured and eaten bt a she-wolf every night. Signy manages to rescue Sigmund. She has two children by Seggeir she hopes will be able to overthrow their father, but when they appear to be too weak, she has them both killed.
Gudrun - Wife of Sigurd (son of Sigmund). SHe actually dons armor and fights alonside her brothers agianst King Atli (Atilla the Hun) and is defeated. She marries him as a result.
Male Characters
Sigmund - probably the most important of the Volsungs. Odin leaves a sword in a tree for anyone worthy. When Seggeir fails to pull it out, Sigmund succeeds. This starts the rivalry between the Volsungs and Seggeir, but it also means that Sigmund is destined to become king. He has a son with his twin sister and together they overthrow Seggeir and Sigmund becomes king. Just to make things more confusing, Sigmund's son, Sigurth/Sigurd will name his son Sigmund, after his grandfather.
Sigurd - Son of Sigmund. Of his hero's journey, killing the dragon Fanfir is one of his greatest feats.