During British rule, who was instrumental for the introduction of the Ryotwari system in the then Madras Presidency?

Thomas Munro and Captain Reid known as the father of the Ryotwari Settlement in India. It was firstly introduced in district 'BARAMAHAL' of Tamilnadu. By this settlement the Ryott-Cultivator was recognised as a owner of field and he had to pay revenue to British Government directly.