Krathu

Kratu (the great Prajapati is the name of the great Rishi Kratu, which appears in two different ages. In the Swayanbhuva Manvantara, Kratu was a Prajapati and a very dear son of Lord Brahma. He was also the son-in-law of Prajapati Daksha. His wife was named Santhati. It is said that he had 60,000 children. They were named as included in the Valakhilyas. Kratu also had 2 sisters, Punya and Satyavati.

Before he was married, Kratu was a good friend of Lord Rudra (Lord Shiva). Rudra was originally called Pasupati, the Lord of Beasts. It appears, though, that he gave away his authority of Pasupati to Kratu when Kratu punished Rudra's father Brahma for his sinful activities.

Later, the demigods divided all the beasts among themselves without giving any share to Rudra and without considering Rudra, as he was initially considered a non-Aryan god. Rudra went to Prajapati and told him that he would kill all the demigods. Prajapati asked him to wait and promised him that soon he would restore the title to Rudra. The demigods then proceeded to perform a sacrifice without inviting Rudra. The head of the sacrifice was none other than Prajapati Daksha, who was nursing a grudge against Rudra or for the simple reason that his daughter Sati married Shiva against his wishes. He did not send even an invitation to Shiva, who was his son-in-law.