Henry Beresford, 2nd Marquess of Waterford
Henry de La Poer Beresford, 2nd Marquess of Waterford KP, PC (Ire) (23 May 1772 – 16 July 1826) styled Lord Le Poer from 1783 until 1789 and Earl of Tyrone from 1789 to 1800, was an Irish peer.
Beresford entered the Irish House of Commons for Londonderry County in 1790 and sat for the constituency until the Act of Union.
In 1798, he also stood for Coleraine but chose not to sit.
Beresford became Marquess of Waterford in 1800 after the death of George Beresford, 1st Marquess of Waterford and was appointed a Knight of the Order of St Patrick on 14 March 1806.
Richard Chenevix (bishop)
Richard Chenevix( 1698 – 11 September 1779) was Bishop of Waterford and Lismore.
He was the grandfather of Melesina Trench and was responsible for her upbringing after she was orphaned, until his death.
John Beresford, 4th Marquess of Waterford
Reverend John de la Poer Beresford, 4th Marquess of Waterford( 27 April 1814 – 6 November 1866) was an Irish peer and Church of Ireland minister.
Beresford was the third son of the Henry Beresford, 2nd Marquess of Waterford and his wife, Susanna.
He was educated at Eton and Trinity College, Cambridge.
He later entered the ministry and was the incumbent of Mullaghbrack, County Armagh and a Prebendary of St Patrick's Cathedral, serving under his uncle, Lord John.
On 20 February 1843, he married Christiana Leslie, daughter of Charles Powell Leslie II.
They had five sons: Beresford inherited the marquessate from his childless brother in 1859.
On his own death in 1866, the title passed to his eldest son, John.
John Butler, 2nd Marquess of Ormonde
John Butler, 2nd Marquess of Ormonde, KP( 24 August 1808 – 25 September 1854) was an Irish politician and peer.
Henry Beresford, 3rd Marquess of Waterford
Henry de La Poer Beresford, 3rd Marquess of Waterford KP( 26 April 1811 – 29 March 1859), styled Lord Henry Beresford before 1824 and Earl of Tyrone between 1824 and 1826, was an Irish peer.
He was the second son of the 2nd Marquess of Waterford, but became heir apparent to the marquessate on the death of his elder brother, George Beresford, Earl of Tyrone, in 1824.
He succeeded to the marquessate on his father's death in 1826.
Henry Bryant (naturalist)
Henry Bryant( May 12, 1820 – February 2, 1867) was an American physician and naturalist.
He was the grandfather of Henry Bryant Bigelow.
George Beresford, 1st Marquess of Waterford
George de
la Poer Beresford, 1st Marquess of Waterford, KP, PC
(Ire) (8 January 1735 – 3 December 1800) was an Irish politician, known as George Beresford, 2nd Earl of Tyrone from 1763 to 1789.
Beresford was the eldest son of Marcus Beresford, 1st Earl of Tyrone and his wife, Katherine, Baroness de la Poer.
He was educated at Kilkenny College.
From 1757-60, he was a Member of the Irish House of Commons for Waterford County from 1757 to 1760, and for Coleraine from 1761 until 1763, when he inherited his father's earldom, entered the Irish House of Lords and was admitted to the Privy Council of Ireland.
He was Governor of Waterford from 1766 and custos rotulorum of that county from 1769 to 1800, during which time he was made a Knight of St Patrick, created Baron Tyrone in the Peerage of Great Britain in 1786, and elevated as a marquess in 1789.
James Graham, 2nd Marquess of Montrose
James Graham, 2nd Marquess of Montrose( – February 1669) was a Scottish nobleman and judge, surnamed the" Good" Marquess.
Lewis Gordon, 3rd Marquess of Huntly
Lewis Gordon, 3rd Marquess of Huntly( c. 1626–1653) was a Scottish nobleman.
He was the third son of George Gordon, 2nd Marquess of Huntly.
William Herbert, 2nd Marquess of Powis
William Herbert, 2nd Marquess of Powis( c. 1660–1745) was a Welsh aristocrat and Jacobite supporter.

Question: Who is the paternal grandfather of Henry Beresford, 2Nd Marquess Of Waterford?