THE RT HON MICHAEL HILL MP (1672-99), of Hillsborough, County Down,
a privy counsellor to WILLIAM III, and a member of both the English and Irish parliaments, who wedded, in 1690, Anne, only daughter of Sir John Trevor, knight, of Brynkinalt, Denbighshire, Speaker of the House of Commons, and subsequently first Lord Commissioner of the Great Seal; by whom he had two sons, Trevor, created Viscount Hillsborough, founder of the house of Downshire; andARTHUR HILL (1694-1771), of Belvoir Park, Newtownbreda, County Down,
MP for County Down in 1727, who inherited the estates of his maternal grandfather, Sir John Trevor, in 1762; upon which occasion he assumed the additional surname of TREVOR, and was created, in 1766, Baron Hill and VISCOUNT DUNGANNON.His lordship espoused firstly, Anne, third daughter and co-heir of the Rt Hon Joseph Deane, Chief Baron of the Irish Exchequer, but had no issue.
He wedded secondly, in 1737, Anne, daughter and heir of Edmund Francis Stafford, of Brownstown, County Meath, by whom he had,
Arthur, MP (1738-70), predeceased his father;Anne, m to 1st Earl of Mornington;Prudence, m to Charles Powell Leslie.
ARTHUR (1763-1837), 2nd Viscount, who married, in 1795, Charlotte, eldest surviving daughter of Charles, Lord Southampton, and by her ladyship had two sons,
ARTHUR;Charles Henry (1801-23).
ARTHUR (1798-1862), 3rd Viscount, who wedded, in 1821, Sophia, fourth daughter of George D'Arcy Irvine, of Castle Irvine, County Fermanagh.
The titles expied on the death of the 3rd Viscount in 1862.
The Dungannon estates, including Brynkinalt, passed to the latter's kinsman, Lord Edwin Hill, third son of 3rd Marquess of Downshire, who assumed the additional surname of TREVOR and was created Baron Trevor, of Brynkinallt, Denbighshire, in 1890.
Of particular interest is the fact that Lord and Lady Dungannon had one son and two daughters, one of whom, the Hon Anne Hill-Trevor, married Garrett, 1st Earl of Mornington, by whom she had issue Richard, 1st Marquess Wellesley; and Arthur, 1st Duke of Wellington.
Of course this makes Lord Dungannon the grandfather of "The Great Duke" of Wellington; and it can be supposed that the Great Duke would have been familiar with the Belvoir demesne and spent time there during his childhood.
Below is the 1st Viscount's memorial:-
First published in February, 2010. Dungannon arms (2nd Creation) courtesy of European Heraldry.