The founder was Ranjith Singh who in 1760, profiting from the troubled times of the Maratha invasion, proclaimed his state independent and was acknowledged as a Raja by the Marathas. In 1817 Samthar was recognized as a state by the British.[5] They received a sanad of adoption in 1862. In 1884 the state had to cede some territories for the construction of the railways.[6] In 1947 it signed Instrument of Accession merging into Union of India in August 1947.[7]
Samthar Fort once the center of governance is still being used as residence by royal family.[8]
Rajas
1817 – 1827 Ranjit Singh II (d. 1827)
1827 – 1864 Hindupat Singh (b. 1823 – d. 1890)
1858 – 3 Feb 1865 Rani .... (f) -Regent
3 Feb 1865 – 1877 Chhatar Singh (b. 1843 – d. 1896)
^Vadivelu, A. (1915). The Ruling Chiefs, Nobles & Zamindars of India. G.C. Loganadham. p. 331. Retrieved 3 May 2025. Samthar ruling family descanded from Bar-gujar clan. One Suraj Bans was the founder.
^P, Kabad: Waman. Indian Who's who. Yeshanand & Company. p. 296. Retrieved 3 May 2025. SAMTHAR . ( CI . ) His Highness Maharaja Sir Bir Singh Deo Bahadur , K.C.I.E , Bargujar , b . Aug. 26 , 1864 ; suc . June 17 , 1896 : area , 178 sq . miles ; population , 33,307 ; annual revenue , Rs . 3,40,000