Origin story
Vyasa, also called Krishna Dvaipayana, is the sage who divided the single Veda into the Rig, Sama, Yajur and Atharva Vedas so that its knowledge could be preserved and taught. Tradition credits him with compiling the Mahabharata, the eighteen Puranas and the Brahma Sutras, and he appears as a central figure in the epic he is said to have composed.
Born to the sage Parashara and Satyavati on an island in the Yamuna, he is counted among the Chiranjivis, the immortals said to remain in the world through the present age. Vyasa Purnima honours him each year, and the Sree Veda Vyasa Temple near Chakkulathukavu in Alappuzha is one of the rare shrines dedicated primarily to him.
Source: Wikipedia: Vyasa — https://en.wikipedia.org/wiki/Vyasa