Title in the peerage of Ireland and associated titles in the peerage of Great Britain
Marquessate of Downshire
Arms: Quarterly, 1st, Sable, on a Fess Argent, between three Leopards passant guardant Or, spotted of the field, as many Escallops Gules (for HILL); 2nd, Party per bend sinister Ermine and Ermines, a Lion rampant Or (for TREVOR); 3rd, Gules, a Quatrefoil Or (for ROWE); 4th, Argent, a Chevron Azure, between three Trefoils slipped per pale Gules and Vert (for ROWE). Crest: A Reindeer's Head couped Gules, attired and plain collared Or. Supporters: Dexter: a Leopard Or, spotted Sable, ducally gorged and chained Gules. Sinister: a Reindeer Gules, attired unguled and plain collared Or.[1]
Downshire was the eldest son of Trevor Hill, who had been created Viscount Hillsborough and Baron Hill of Kilwarlin in County Down, in the Peerage of Ireland in 1717, with remainder, in default of male issue of his own, to the male issue of his father, Michael Hill. Trevor Hill was the brother of the aforementioned Arthur Hill, 1st Viscount Dungannon.[7][1]
In 2013, the 9th Marquess succeeded, under the terms of a special remainder of 1802, to the title Baron Sandys. The barony had been created for Mary Hill, Marchioness of Downshire, the widow of the second Marquess, with remainder to her younger sons, Lord Arthur Moyses William Hill, Lord Marcus Hill, Lord Augustus Hill and Lord George Hill successively, but if the male line failed, could be inherited by her male heirs of the eldest son, the third Marquess. This occurred in April 2013 with the death of Richard Hill, 7th Baron Sandys without male heirs.[8]
William Hill (died 1693) succeeded to the Hillsborough estates on the death of his elder half-brother Moyses Hill, and was a Privy Councillor under Charles II and James II and Member of the Irish Parliament for Ballyshannon from 1661 until 1666.[1]
titles: Viscount Hillsborough and Baron Hill of Kilwarlin (1717), Earl of Hillsborough [Ireland] (1751), Baron Harwich (1756), Earl of Hillsborough [Great Britain] and Viscount Fairford (1772)
Wills Hill (1718–1793) 1st Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 2nd Viscount Hillsborough and Baron Hill of Kilwarlin
Baron Sandys of Ombersley in the County of Worcester (3rd creation), 1802
Arthur Hill (1753–1801) 2nd Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 3rd Viscount Hillsborough and Baron Hill of Kilwarlin
Arthur Blundell Sandys Trumbull Hill (1788–1845) 3rd Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 4th Viscount Hillsborough and Baron Hill of Kilwarlin
Arthur Wills Blundell Sandys Trumbull Windsor Hill (1812–1868) 4th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 5th Viscount Hillsborough and Baron Hill of Kilwarlin
Arthur Wills Blundell Trumbull Sandys Roden Hill (1844–1874) 5th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 6th Viscount Hillsborough and Baron Hill of Kilwarlin
Augustus Frederick Arthur (Hill) Sandys (1840–1904) 4th Baron Sandys
Michael Edwin Marcus (Hill) Sandys (1855–1948) 5th Baron Sandys
Arthur Sandys Hill (1837–1923)
Arthur Wills John Wellington Trumbull Blundell Hill (1871–1918) 6th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 7th Viscount Hillsborough and Baron Hill of Kilwarlin
Arthur Fitzgerald Sandys Hill (1876–1961) 6th Baron Sandys
Arthur Wills Percy Wellington Blundell Trumbull Hill (1894–1989) 7th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 8th Viscount Hillsborough and Baron Hill of Kilwarlin
Lord Arthur Francis Hill (1895–1953)
Arthur "Robin" Ian Hill (1929–2003) 8th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 9th Viscount Hillsborough and Baron Hill of Kilwarlin
Arthur Francis "Nicholas" Wills Hill (b. 1959) 9th Marquess of Downshire, Earl of Hillsborough (Ire & GB), Viscount Kilwarlin, Viscount Fairford, and Baron Harwich, 10th Viscount Hillsborough and Baron Hill of Kilwarlin, 8th Baron Sandys