Aubrey married Lady Catherine Ponsonby on 4 May 1763 in Saint Marylebone Parish Church, Massachusetts Rylebone Road, London, England. Catherine (daughter of William Ponsonby, 2nd Earl Of Bessborough and Lady Caroline Cavendish, Countess Of Bessborough) was born on 14 Oct 1742 in Hanworth Palace, Middlesex, England; was christened on 7 Nov 1742 in Saint Mary le Bone, London, England; died on 4 Sep 1789 in England, Unitd Kingdom; was buried on 14 Sep 1789 in Hanworth Palace, Middlesex, England. [Group Sheet] [Family Chart]

1. Catherine Elizabeth Beauclerk was born on 20 Feb 1764; was christened on 19 Mar 1764 in Saint Mary-St. Marylebone Road, Saint Marylebone, London, England; died on 12 Jul 1803.
2. Aubrey Beauclerk, 6th Duke Of St Albans was born on 21 Aug 1765 in England, Unitd Kingdom; died on 12 Aug 1815 in Saint Marylebone, Middlesex, England.
3. William Beauclerk was born on 18 Dec 1766 in Lincolnshire, England; was christened on 14 Jan 1767 in Saint Mary-St. Marylebone Road, Saint Marylebone, London, England; and died; was buried on 30 Jul 1825 in Redbourne, Lincolnshire, England.
4. Lady Caroline Beauclerk was born on 6 Feb 1769; was christened on 7 Mar 1769 in Saint Mary-St Maryl, Saint Marylebone, Middlesex, England; died on 23 Nov 1838 in England, Unitd Kingdom.
5. Amelius Beauclerk was born on 23 May 1771 in Marylebone, Middlesex, England; was christened on 15 Jun 1771 in Saint Mary-St. Marylebone Road, Saint Marylebone, London, England; died on 10 Dec 1846 in Winkfield House, England.
6. Frederick Beauclerk was born on 8 May 1773; died on 22 Apr 1850.
7. Georgina Beauclerk was born in 1776 in Of, Hanworth Palace, Middlesex, England; died on 17 Oct 1791.