The Maharajah Serfoji II of Tanjore, who was a renowned patron for the arts and sciences, tucked away the leaves in his library, so that they could be in the near future. The British recovered the leaves within their time in the kingdom, and later sold them to a few Indian families who keep the leaves. The families that keep them are meticulous and continue to educate individuals on how to read the leaves to ensure that they can still benefit from the wisdom of these Siddhas. They are also called Naadi Astrology Family. These Siddhas are now considered to be Nadi Astrologer families. It is believed that one of the Nadi users Mr.G.Natarajan Swamy has been working with this region around Vaitheeswaran oil and is part of one of the top Nadi families.

In the 12th century, these leaves were discovered in the area in South India ancient Vaitheeswaran Koil in Tamil Nadu. The Nayanar community that discovered these leaves recognized their significance and created exactly copies. They are the official custodians of the Nadi Leaves since. The Nayanars are the sole group of people who have been taught for generations to interpret the leaf and interpret them in order to make the predictions. They are also the only ones with access to Nadi leaves and continue to follow the traditional nadi Astrology. Astrologers of the past who were keen on learning about the subject to nadi-astrology were able to obtain the leaves from libraries. It appears that the palm leaves were initially written on animal skins and some leaves later were copied onto palm leaves. They were also preserved by using oil derived from blood of peacocks. The principal center for Nadi Astrology is situated in the Vaitheeswaran oil located in South India.