The Nawab Murshid Quli Khan made the zamindars the new aristocrats out of the old Jagirdars ( nobleman ) .
It was Lord Cornwalis who made the distinction hereditary in 1793 .
Although the Nawab Murshid Quli Khan made the zamindars the new aristocrats out of the old Jagirdars ( nobleman ) , it was Lord Cornwalis who made the distinction hereditary in 1793 .