Complex sentence: Badar Singh, the great-grand son of Sada Singh, married the daughter of a petty sardar of the district, and his son Jassa Singh Ahluwalia was born in 1718.
Split into simpler sentences: Badar Singh, the great-grandson of Sada Singh, married the daughter of a petty sardar of the district. Their son Jassa Singh Ahluwalia was born in 1718.