Sir Roger Mostyn, 3rd Baronet (31 July 1673 – 5 May 1739), of Mostyn Hall, Holywell, Flintshire, was a Welsh Tory politician who sat in the English and British House of Commons for 25 years from 1701 to 1735.
Sir Roger Mostyn, 3rd Baronet (31 July 1673 – 5 May 1739), of Mostyn Hall, Holywell, Flintshire, was a Welsh Tory politician who sat in the English and British House of Commons for 25 years from 1701 to 1735.