Lionel Cranfield Sackville , 1st Duke of Dorset , KG , PC ( 18 January 1688 -- 10 October 1765 ) was an English political leader and Lord Lieutenant of Ireland .
Lionel Cranfield Sackville , 1st Duke of Dorset , PC ( 18 January 1688 - 10 October 1765 ) was an English politician and Lord Lieutenant of Ireland .