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Duncannon, Viscount (I, 1722/3)


Creation: let.pat. 28 Feb 1722/3


Family name: Ponsonby




 See Earl of Bessborough 



William [Ponsonby], 1st Baron Bessborough later 1st Viscount Duncannon, PC

2nd son and heir of Sir John Ponsonby, of Hale and Bessborough, co. Kilkenny, by his second wife Hon Elizabeth Trevor (widow of (1) Richard Wingfield, of Powerscourt, and (2) Edward Trevor), dau. of Henry [Folliott], 1st Baron Folliott




Mary Moore (d. 26 May 1713), dau. of Hon Randal Moore, of Ardee, co. Louth (by his first wife Lady Jane Brabazon, 1st dau. of Edward [Brabazon], 2nd Earl of Meath), 5th son of Charles [Moore], 2nd Viscount Moore


1. Hon Brabazon Ponsonby, later 2nd Viscount Duncannon later 1st Earl of Bessborough

2. Maj Gen Hon Henry Ponsonby, of Ashgrove (d. 11 May 1745), mar. his cousin Lady Frances Brabazon (d. 4 Nov 1751), 4th dau. of Chambré [Brabazon], 5th Earl of Meath, and had issue

1. Hon Elizabeth Ponsonby, mar. Richard Moore MP, of Kilworth, co. Cork (dvp.), 1st son of Stephen Moore, of Kilworth, co. Cork, Governor of co. Tipperary, by his wife ..... Croke, dau. or grandau. of Sir George Croke, Lord Chief Justice of England, and had issue

2. Hon Anne Ponsonby, mar. after Apr 1706 as his first wife Nicholas [Loftus], 1st Viscount Loftus, and had issue

3. Hon Mary Ponsonby, mar. William Wall, of Coolnamuch Castle, co. Waterford, and had issue

4. Hon Letitia Ponsonby, mar. James May, of Mayfield, co. Waterford (d. 1729), son of Edward May, of Grace Dieu, and had issue

5. Hon Dorothy Ponsonby, mar. as his first wife William Hore MP, of Harperstown, co. Wexford, Attorney-General of Ireland (d. Feb 1745), 1st son and heir of Col William Hore MP, of Harperstown, co. Wexford, by his first wife Anne Bunbury, dau. of Rev Thomas Bunbury, of Balesker, and had issue

6. Hon Bridget Ponsonby (dsp.), mar. as his first wife Arthur Weldon, of Rahinderry

7. Hon Folliot Ponsonby (d. 1746)


17 Nov 1724


11 Sep 1721 Baron Bessborough, of Bessborough in the County of Kilkenny

28 Feb 1722/3 Viscount Duncannon, of the Fort of Duncannon in the County of Wexford

suc. by



Member of Parliament for co. Kilkenny 1692-93, 1695-99 and 1703-21; Privy Councillor [I] 1725


Brabazon [Ponsonby], 2nd Viscount Duncannon later 1st Earl of Bessborough


6 Oct 1739 Earl of Bessborough (Peerage of Ireland)

12 Jun 1749 Baron Ponsonby of Sysonby, of Sysonby in the County of Leicester (Peerage of Great Britain)


The Viscountcy of Duncannon has been held by the Earls of Bessborough since 6 Oct 1739.


 Last updated 30 Oct 2003



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