Dakshayani is the First Wife of Lord Shiva.Who Take another reincarnation of sati herself.in previous Life Sati name is Dakshayani. Then Dakshayani is born on Daksh. Daksh Is Son of bramha g.
That’s Why Sati Is called Dakshayani. Dakshayani word derived from Daksh which The Father of Sati. Sati have 61 Sisters according to the puran.
Then Sati does Promise that she doing marriage only Shiva or lord Shiva. Then she does Prayer of lord Shiva Many years then shiva is happy with his Prayer and says yes to marriage with Dakshayani(Sati).
What happen when sati death