Analysis of information sources in references of the Wikipedia article "Hammir Singh" in English language version.
The Charans who occupied significant positions in the courts of the rulers were known as Barhats. In Mewar, the descendants of Baru Charan, who came to be known as Sauda Barhats, acquired prominence on account of Baru's timely military assistance to Hammir in regaining his lost throne.
Maldeva's greatest enemy was Hammir, Rānã of Sesoda, whose grandfather Lakshman Singh had died with his seven sons including Arsi Singh, father of Hamrair, fighting in the battle of Chittor. Hammīr who had survived the memorable battle, Hammir became the Rana of Sesoda estate and constantly waged war to obtain Chittor Maldeva tried to conciliate him. He married his daughter to Hammīr and ceded certain parts of Chittor to him, but the brave Ränā was determined to regain the whole of Chittor. At last his efforts were crowned with success and after the death of Maldeva in about 1321 A.D. Hammir became master of the whole of Mewar, and assumed the title of Mahãrānā. In an inscription of Mahārānā Kumbhā's time,dated 1438 A.D.;Hammīr is said to have killed a large number of Musalmans. Hammir's descendants have ruled Mewar to the present day
The story of Hammira's success against the Muslims cannot, therefore, be regarded as altogether baseless. We may accept the conclusion of Ojha that not only Mewar but nearly the whole of Rajputana became practically independent of Delhi Sultanate.
Influx of the Kathiawari into Mewar was historically older, and apart from Charan traders regularly trading horses (a sub-class of Charans are known as 'sauda' barhats, such as those from Soniyana village in Mewar), a big example of the coming of Kathiawari horses into Mewar and beyond is the episode of the help provided by the Charan devi Aai Varvadi to Rana Hammir singh of the Sisodia clan when he reclaimed Chittor from Maldev of Jalore (under whom it was placed by Alauddin Khilji after sack of Chittor), by sending an army of 500 Kathiawari cavalry under her son Baruji to assist Hammir Singh in retaking Chittor. This was in early 14th century.
Maldeva's greatest enemy was Hammir, Rānã of Sesoda, whose grandfather Lakshman Singh had died with his seven sons including Arsi Singh, father of Hamrair, fighting in the battle of Chittor. Hammīr who had survived the memorable battle, Hammir became the Rana of Sesoda estate and constantly waged war to obtain Chittor Maldeva tried to conciliate him. He married his daughter to Hammīr and ceded certain parts of Chittor to him, but the brave Ränā was determined to regain the whole of Chittor. At last his efforts were crowned with success and after the death of Maldeva in about 1321 A.D. Hammir became master of the whole of Mewar, and assumed the title of Mahãrānā. In an inscription of Mahārānā Kumbhā's time,dated 1438 A.D.;Hammīr is said to have killed a large number of Musalmans. Hammir's descendants have ruled Mewar to the present day