It has come to my to notice that Vasishta Gotra is not found much in the South of Vindhyas as much as it is in the North through a shrewd observation by a reader while commenting on mu Post Which Gotra is Superior?
Yes, it is a fact that Vaishista Gotra is very limited in the South.
One may also notice that Vasishta comes into prominence only after Ramayana despite the fact that Vasishta is one of the Saptha Rishis, who are eternal
And he was the Sage who is also one of the Nava Prajapathis, Nine Prajapathis amomg Daksha, whose Yaaga was destroyed by Veerabhadra on the orders of Lord Shiva.
Vasishta composed (rather grasped and expressed will be the correct term) Mandala 7 of the Rigveda. as the Chief.
The Sag Viswamitra yearned for The Title of Brahma Rishi from Vasishta even though he was called such by even Brahma.
Why is it that such a great personality does not find a prominent place before Ramayana?
The Bhagavatha Purana states that the ancestor of Lord Rama Satyavrata Manu left Dravida(South) for Ayodhya and his son Ikshvaku founded the Ikshvaku Dynasty.
This was necessitated by the great Tsunami in the south as recorded in Tamil classical literature.
Lord Shiva left , at the same time,along with his son Ganesha moved out through the western coast of Bharatavarsha, traveled through the middle east, Europe, Africa, Americas,and finally reached Arctic.
And it was in the Arctic the Rig veda was compiled.
I have detailed post on this, as for all the observations I have made here and exhaustive research was done by Bal Gangadhar Tilak in his Book Arctic Home of the Vedas.
after the rig Veda was composed Shiva and Ganesha set out for India through Russia and Khyber Pass .
This has been misinterpreted as Aryan Invasion.
The archeological evidence linking Ganesha and Shiva throughout the world would strengthen this point.
Now Vasishta, being a Manu and a Parajapati obviously left along with Shiva and while Maheswara sukthas are by Shiva, Rig veda important portions were done by vasishta and others.
It may be of interest to note that there is a Temple For Daksha in Kerala( I have a Post on this)
Thus ,as Vasishta left along with Shiva at the time of Tsunami there are minimal references to Vasishta in the South.
By the time they returned to india, and Vasishta had become the Kula Guru of Ikshvaku Dynasty, years had gone by.
In the south the other progeny of Shiva, Subrahmanya, called as Murugan in Tamil spread Santana Dharma in South East Asia and developed the Santana dharma further in the south.
That is the reason one finds the Murugan is identified with Tamil and Shiva being treated as the Adhi Siddha and as ‘Ancient of the Ancients’
Munnaip Pazhamporutku Munnaip ParamPorule – Tamil.
Hnece Vasishta lineage was limited in the south and as he became the Kula Guru after settling down in the North his clan expanded there.
Hence ther are less Vasishta Gotra in South.
Vashishtha (Sanskrit: वशिष्ठ, वसिष्ठ, IAST: Vaśiṣṭha, Vasiṣṭha, Thai: Vasit, Tamil: வசிட்டர்) is one of the Saptarishis (seven great Rishis) in the seventh, i.e. the presentManvantara, or age of Manu. Vashista is a manasputra of God Brahma. He had in his possession the divine cow Kamadhenu, and Nandini her child, who could grant anything to their owners. Arundhati is the name of the wife of Vashista. RigVeda 7:33 mentions Vashishtha rishi as son of MitraVaruṇa and Urvasi.
Vashistha, as one of 9 Prajapatis, is credited as the chief author of Mandala 7 of the Rigveda. Vashistha and his family are glorified in RV 7.33, extolling their role in the Battle of the Ten Kings, making him the only mortal besides Bhava to have a Rigvedic hymn dedicated to him. Another treatise attributed to him is “Vashistha Samhita” – a book on the Vedic system of electional astrology
More on VasishtaPrajapati to follow.