Sahib Singh of Isapuria was born in 1805, He son of Sirdar Ram Singh Of Isapuria, He was belonged to the Isapur branch of the Randhawa Jat family founded by his great grand father, Chaudhary Dasaundha Singh. At the time of his father`s death in 1836, he was serving under Raja Suchet Singh Dogra. He participated in many of Maharaja Ranjit Singh`s campaigns of conquest. He was present when Multan was conquered in 1818 and also joined the expedition to Kashmir the following year. He served under Prince Kharak Singh and Raja Suchet Singh at Mankera, Bannu and Derajat. He survived long after the occupation of the Punjab by the British and resided at isapur.
- L.H Griffin, and C.F. Massy, Chiefs and Families of Note in the Punjab. Lahore,1909