Mahyavanshi are a caste of India, who were originally Mayavat Rajputs who started a successful movement in the early 20th Century to establish their identity as a branch of Mayavat Rulers.
The new nomenclature of Mahyavanshi was given to them via a Government of India circular in the year 1939, due largely to the efforts of K. M. Munshi, then Home Minister of Bombay and Dr. Purshottam Solanki, representative of Depressed Classes of Gujarat, who stressed that Mahyavanshis are indeed descendants of ancient rulers and hence also alternately identified as Mayavat Rulers. Later on in year 1968, via a Government of India circular, the mahyavanshi's of Daman, were also given the status of Mahyavanshi after the Indian annexation of Daman from the Portuguese.
A prominent figure in re-writing the history of Mahyavanshis was Makanji Kuber Makwana, who wrote several works on the ancient history of Mahyavnashi and linking them with the Mayavat Rajputs (a branch of Parmara clan), and started the new social movement to "regain" their Rajput and Kshatriya status, which has been successful.
The reason behind Mahyavanshi success to gain Kshatriya status was that they were able to mobilize public opinion and procured support for their cause from both from British and Indian leaders and historical research books on their community published by Makanji Kuber Makwana, which strengthened their case.
Dr. Kanhaiyalal Maneklal Munshi, then the Home Minister of Bombay State, in a 1931 lecture delivered in Kasavji Hall in Bombay stressed that the Mahyavanshi were the descendents of the Hattiavanshi King Arjuna, arguing that it was because of the slaughter of Parsuram they were relegated to a lower caste. Also Purshottam Solanki, representative of Depressed Classes of Gujarat in a speech given in Bombay Legislative Council, vehemently stressed that Mahars were martial races and their occupation was military too in past. He further said, thau were not drags of society but have been rulers of Gujarat and other areas of India in past and were descendants of Kshatriya or Rajput clans and should therefore be legitimized as a Kshatriya clan.
Others involved in this affirming this identity were Garibdasji Ramdasji and other Mahants of Ramanandi sect, Phakir Jeevan Mevasi, besides several of their community leaders spread across Bombay State (present day Maharashtra and Gujarat), Sindh ( Karachi and Raban ), Portuguese India ( Nani and Moti Daman ) and also from South Africa, where their population was living in cities like Johannesburg and Pretoria, who in unison impressed upon the government for revision of their social status.
The historical research books on Mahayavanshi were mainly published in first decade of 20th century; all written in Gujarati, which dwelt upon the ancient history of Mahayavanhis were originally Mayavat Rajputs and should be recognized as Mahyavanshis. These books helped them get the Rajput status: 
Some of these works include Makanji Kuber Makwana's Mayavat Rajput Prakash (1908) (A light on Mayavat Rajputs), Mahyavanshi no Itihas (1910) (History of Mahyavanshi), Mayavat Rajputoday (1911) (The rise of Mayavat Rajput) and Mahyavanshi Atle Shu? (1911) (Who is a Mahyavanshi?), as well as Phakir Jeevan Mevashi's Mayavat Ranshingu arthat Khudarano Karta.
The Mahyavanshis are primarily divided into exogamous clans like - Aatekar Pardinar, Danania, Kantharia, Barodia, Chaseia, Surti, Kosadia, Khanvanshi,kosambi Parmar, Rana, Rathod, Wadekar, Makwana,Mistry, Solanki and Vaghela., Hadiyol
- They worship Mata or Devi and always have a 'Kuldevi'.
- They used to sacrifice a goat in times of calamity. This has now been replaced by offering food.
- Under the head of the dead body, they keep a knife.
- When a married person dies his wife wears her best clothes and performs aarti of her dead husband
- Each Mahyavanshi irrespective of his sects worships Devi and offer coconut, loban, and agarbatti. On Dussera day they do a pooja and replace the old coconut with the new one.
- Before marriage, as among Rajputs, the Devi pooja is essential among the Mahyavanshis and even today they rigidly follow this practice.
- Kumar Suresh Singh; B. R. Solanki; N. K. Sinha; Jaime F. Pereira, Anthropological Survey of India (1 January 1995). Daman and Diu. Popular Prakashan. pp. 127–. ISBN 978-81-7154-761-6. Retrieved 26 July 2011.
- Shri Makanji Kuber Makwana, The only Historian who gave Mahyavanshi, their Lost Pride! at Mahyavanshi Foundation
- Dr. P. G. Solanki: The Man Who Wrote the Destiny of Kshatriya Mahyavanshi Community. At Mahyavanshi Foundation
- Y. A. Parmar (1987). The Mahyavanshi: the success story of a scheduled caste. Mittal Publications. pp. 87–. GGKEY:KEQ4SL0H0RJ. Retrieved 26 July 2011.
- Sarat Chandra Roy (Ral Bahadur) (1982). Man in India. A. K. Bose. Retrieved 26 July 2011.
- Takashi Shinoda. The Other Gujarat.[when?][where?]
- Makanji Kuber Makwana, considered the spearhead of the Mayawat Rajput movement, examined this question in his 1911 book 'Mahyavanshi Atle Shu?' (Who is a Mahyavanshi?). Dr. Kanyaiyalal Munshi, in a 1931 lecture stressed that the Mahyavanshi were the descendents of the 'Hattiavanshi' king Arjuna. It was because of the slaughter of Parsuram that they were relegated to a lower caste.
- 'Mahyavanshi Atle Shu?' (Who is a Mahyavanshi?) (1911) by Makanji Kuber Makwana