Robert Williams (died 1763)  Robert Williams (c. 1695–1763), of Erbistock, Denbighshire, was a Welsh politician. Williams was the second son of Sir William Williams, 2nd Baronet. He was a Member (MP) of the Parliament of England for Montgomeryshire in 12 December 1740 – 1741 and 2 April 1742 – 1747.