Viscounts Dungannon (1662; First Creation)
- Marcus Trevor, 1st Viscount Dungannon (1618–1670)
- Lewis Trevor, 2nd Viscount Dungannon (d. 1693)
- Marcus Trevor, 3rd Viscount Dungannon (1669–1706)
Read more about this topic: Viscount Dungannon
Viscounts Dungannon (1662; First Creation)
Read more about this topic: Viscount Dungannon