He was clearly a highly respected individual and served as High Sheriff of Glamorgan in 1757 .
Lewis 's family had lived at Llanishen for many generations but he was responsible for building the New House there .
Lewis was clearly a highly respected Lewis and served as High Sheriff of Glamorgan in 1757 .
Lewis 's family had lived at Llanishen for many generations but he was responsible for building the New House there .