Sir Robert Williams

• Sir Robert Williams, 2nd Baronet, MP for Carnarvonshire, 1656–1658, and for Carnarvon Boroughs, 1659
• Sir Robert Williams, 9th Baronet of Penryn, MP for Carnarvonshire, 1790–1826, and for Beaumaris, 1826–1831
• Sir Robert Williams, 1st Baronet, of Bridehead, Conservative Member of Parliament for West Dorset, 1895-1922
• Sir Robert Williams, 1st Baronet, of Park, Scottish mining engineer, explorer of Africa, and railway developer