Tomars or Tanwars are Chandravanshi Rajputs
According to legend, Tomar Rajputs are the descendants of Pandavas of Mahabhatara- descended from Arjun, through his son Abhimanyu and grandson, Prikshit. King Yudhishtra founded Indraprashth, modern Delhi, but he later abdicated in favour of Prikshit, from Prikshit to king King Dihlu Tomar , Tomar rule at Delhi until 1182 A.D.
Tomars are the blood of Arjuna, one of the heroes of the Hindu epic Mahābhārata. Arjuna is a central figure in Hindu religion whose name means 'bright', 'shining', 'white' or 'silver' . Arjuna is thus "The Peerless Archer". The third of the five Pandava brothers, Arjuna was one of the children borne by Kunti, first wife of Pandu.He is sometimes refereed as 'forth Krishna' of Mahabharata.
Abhimanyu a tragic hero in the Mahābhārata. He is the son of Arjuna and Subhadra( the half-sister of Lord Krishna) . He is an unparalleled archer and is considered to equal his father in prowess with the bow and arrow.
Parikshit is the son of Uttara, the Matsya princess and Abhimanyu, the Vrishni son of Arjuna. He is born only after the end of the war.He was also referred to as the "King of the Kurus".
Parikshit with ATTRISH as the predominant GOTRA of all the Tomars. Attrish comes from the great sage ATTRI and Tomars followed him and hence the name.
Tomar rule at Delhi lasted until 1182 A.D. when King Anangpal-II Tomar appointed Prithviraj Chauhan, his daughter's son and King of Ajmer at that time, as 'caretaker'.
Prithviraj Chauhan was mostly a caretaker king as long as Anangpal Tomar II, his grandfather(Maternal) was alive and ruling. The fact that Prithviraj's coronation to crown never happened makes this confusion even more apparent.
Following King Anangpal giving the throne of Delhi to his grandson Prithviraj Chauhan, or more accurately Prithviraj usurping the throne of Delhi, a branch of the Tomar clan established themselves in the area of modern Gwalior in northern Madhya Pradesh. One of the greatest Tomar kings Man Singh built the fortress citadel which still stands there. A debatable topic is that Tomars did not lose any battle, Anangpal II made Prithviraj Chauhan (the son of Karpuri Devi, the daughter of king Anangpal II), his grandson the heir apparent to the throne since he was probably the most efficient warrior and leader of his time. It is said that Anangpal II's younger brothers then left Delhi and moved to Gwalior, Rajasthan, Haryana and other areas of northern India in disbelief and anger.
The Tomar king Man Singh built the fortress citadel which still stands there.
Tomars/ Tanwars moved from Delhi to Haryana (Bhiwani, Karnal and Mahendergarh Districts), Madhya Pradesh (Morena, Bhind, Gwalior), Punjab and Rajasthan (Patan State and nearby areas including Neem-ka-Thana, Mavanda,Mandholi). They are spread from Punjab, to Haryana, to Western Uttar Pradesh (Meerut, Baraut, Muzaffarnagar Ghaziabad, Aligarh, Bulandshahr), Eastern Uttar pradesh (Ballia) to southern Nepal to western Rajastan to Northern Madhya Pradesh and even some in Pakistan- known as Towars. In northern India, there are some Tomars of 'Jat' caste as well, e.g. in the area called 'Badaut' in Baghpat district of western UP.