Marquess of Linlithgow the Baron Rankeillour for more information on this branch of the family). The Hon. James Hope-Wallace, second son of the fourth Earl, was a lieutenant-colonel in the army and sat as a Member of Parliament. Charles Dunbar Hope-Dunbar, grandson of the Hon. Charles Hope, third son of the fourth Earl, proved his claim to the Dunbar Baronetcy of Baldoon (created in 1664) in 1916 and became the 6th Baronet (see Hope-Dunbar baronets). Lord John Hope, younger twin son of the second Marquess, was a prominent Conservative politician and was created Baron Glendevon in 1964. Marquess of Linlithgow Marquess of Linlithgow,
Marquess of Waterford of Ireland (created by writ ca. 1650). Lord Tyrone was succeeded by his fourth but eldest surviving son, the second Earl, who also inherited the title Baron La Poer from his mother in 1769. In 1786 he was created Baron Tyrone, of Haverfordwest in the County of Pembroke, in the Peerage of Great Britain. Three years later he was made Marquess of Waterford in the Peerage of Ireland. The titles descended in the direct line until the death of his grandson, the third Marquess, in 1859. The late Marquess was succeeded by his younger brother, the fourth Marquess. the titles