Robert Stewart, 1st Marquess of Londonderry, was a County Down landowner, Irish Volunteer, and member of the Irish Parliament who, exceptionally for an Ulster Scot and Presbyterian, rose within the ranks of Ireland's Anglican "Protestant Ascendancy." His success was fuelled by wealth acquired through judicious marriages, and by the advancing political career of his son, Viscount Castlereagh. In 1798 he gained notoriety for refusing to intercede on behalf of James Porter, his local Presbyterian minister, executed outside the Stewart demesne as a rebel.
- Occupation
- politician
- Position held
- Member of Parliament in the Parliament of Ireland, Member of the Privy Council of Ireland, member of the House of Lords
- Citizenship
