Rajput is a Kshatriya caste. Kshatriya (Hindi: क्षत्रिय, kṣatriya from Sanskrit: क्षत्र, kṣatra) is one of the four varnas, or castes, in Hinduism. In ancient Vedic society, a person's varna was assigned based on aptitude (guna), conduct (karma), and nature (swabhava) ( varnas are the Brahmins (teachers, scholars and priests), the Kshatriyas (kings and warriors), the Vaishyas (traders), and Shudras (agriculturists, service providers, and some artisan groups). Based on aptitude, conduct and nature the Kshatriya/ Rajputs were warriors and rulers.
Rajputs are from the descent from ancient royal warrior dynasties of Kshatriyas in India and trace their roots to Rajputana, an area which has come to be known as Rajasthan after the formation of this state in independent, post-colonial India.
Different sources talk about different origins of Rajputs. One school of thoughts indicates that the Rajputs did not emerge from a single tribe, cast or community. They emerge from history as a collection of clans ruling different regions. The term Rajput as it is used today refers to the set of intermarrying royal clans. Two lists of 36 clans are found in Kumarpala Charita and the Prithviraj Raso compiled in Rajasthan region. Some of these clans are still quite well known (Parmara, Rever, Chalukya, Parihar, Chauhan, Rathore, Thakore), some others are not as common (Gohil, Chapotkat, Kalchuri etc), while yet other names are hard to identify; apparently, with the loss of their domains and status, they dropped out of history.
The other study relates to the origin of Rajputs to The Agni-kunda
As per this study, the Kshatriyas of the land were exterminated by Parshurama, an avatar of Vishnu. After that the saint Vasishta perfomed a great Yagya of (Agni Kund) fire-sacrifice, and asked the gods a way to defend the (Truth/ Sachai) righteousness on earth. His prayers were heard and one or more youths arose from the flames of the agni kund and these were Rajputs. That is a reason that Rajputs are also termed as sons of Sun/Agni. The creation of Parmara (know known as Parmar), Chauhans, Solankis and Rahevars were from that process.
The history took another look to the origin of Rajputs with the discovery of copperplates grants of 949 CE and are one of the most authenticated documents that shed light on the origin of Parmar dynasty and hence origin of Rajputs.
These plates indicate that Parmar
The Paramaras started out as feudatory of the Rashtrakutas (a royal Indian dynasty ruling large parts of southern, central and northern India between the sixth and the thirteenth centuries. During this period they ruled as several closely related, but individual clans)of Manyakheta. They belonged to the same "kula" (family) as the Rashtrakutas.
This establish the fact that Agnikund origin came much later.
Harsola Copperplates grants of 949 CE describing Parmars.
There are other thoughts of origin of Rajputs but mainly the important is that the tribe belong to warriors and rulers.
Later on there were some A large number of inscriptions and other material texts have come to light since the mid-19th century that allow us to trace the evolution of this legend in detail.
The Agnikunda story is first found in the Nava-sahasanka-charita by Padmagupta, a fictional romance where the hero is identifiable as Sindhuraja, the patron of the author Padmagupta. This work mentions that the progenitor of the Paramaras was created from fire by sage Vashishtha. During the period of decline of the Paramaras of Dhar, the story finds mention in several royal inscriptions. Later, the story is expanded to include two or three other Rajput clans. Eventually, some scholars proposed that all of the Rajputs were created from the Agnikunda.
Rajput's in Punjab are not Mehton's(used by some rogue to tease Mehta Rajputs) but are Mehta Rajputs
Mehta, which was a special title of honour among the Rajputs and others in the olden days. The Mehta Rajputs are the one's who were given this title for thier ability to handle large areas for land use. Similary the father of Guru Nanak Dev Ji, the first Guru of Sikhs was titled as Mehta and is still known as Mehta Kalu Das. The Rajput Mehtas settled in the area around Hoshiarpur. These Mehat’s were given high titles by the rulers to recognize their contribution and ability to manage.
Mehta's when setteldown in this belt, started doing agricultural work. This was not considered as a part of Rajput traditions. Mehta’s also took another turn from the Rajput Traditions by performing marriages of widows.
Mehta Raja Jau Singh Sawai had two sons, of whom one, Raja Jagna having quarrelled with his father came to Punjab and founded Banaga (The shrine of the Mehta's ancestor in Banga was built of bricks from Dharnagri) in Jullundur and Bjaura in Hoshiarput, Panchat in Kapurthata being subsequently founded by five of his descendants, while Mahia his eldest son founded Mayopati in those parts.
Mian Mota, who first settled in Jaswan Kopti near Chamba, and then in Rajpur near Hoshiarpur, founded Narur in Kapurthalal, naming after elder son Nar Chand.
Thakarwal (also know as Randhir Garh in District Hoshiarpur, near Bham) was founded by a Mahta from Jaipur or Jodhpur and the same name village was founded in Phagware Tehsil.
Ref: From “A Glossary of the Tribes and Castes of the Punjab North-West Frontier Province” Based on the Census Report for Punjab, 1883, by the Late Sir DENZIL IBBETSON, K.C.C.I., and the Census Report for Punjab, 1882, by Hon. Mr. E.D. MacLAGAN, C.S.I., and compiled by H. A. Rose.