Lal comes from a productive political period of time with his powerful family rulers of Haryana. His older brother Sahib Ram Sihag was the first politician from the family. Sahib Ram Sihag became Congress MLA from Hisar in 1938 and 1947. Lal had four sons - Partap Singh, Om Prakash Chautala, Ranjit Singh and Jagdish Chander. His eldest son, Partap Singh, was an MLA from Indian National Lok Dal in the 1960s.