Marquess of Londonderry
Noble title
Marquess of Londonderry, of the County of Londonderry, is a title in the Peerage of Ireland. Wikipedia
Peerage: Peerage of Ireland
First holder: Robert Stewart, 1st Earl of Londonderry
Former seat(s): Mount Stewart; Plas Machynlleth; Seaham Hall; Wynyard Hall
Motto: METUENDA COROLLA DRACONIS (The dragon’s crest is to be feared)
Present holder: Frederick Vane-Tempest-Stewart, 10th Marquess