Sir married Lady Caroline Paget on 19 Apr 1737 in St George's Hanover Square, London, England. Lady (daughter of General Thomas Catesby (2nd Earl of Uxbridge) Paget and Mary Whitcombe) was born in 1718 in Sanford, Shropshire, England; died on 7 Feb 1766 in Plas-Newydd, Anglesey, Wales, . [Group Sheet] [Family Chart]

1. Mary Bayly was born in 1738 in Plas-Newyth, Anglesy, Wales; died on 20 Oct 1790.
2. Dorothea Bayly was born on 15 Mar 1739 in Plas-Newyth, Anglesy, Wales; died on 24 Feb 1764 in Knightsbridge, Middlesex, England.
3. Edward Bayly was born in 1742 in Plas-Newyth, Anglesy, Wales; died in 1756.
4. Henry Bayly (1st Earl Uxbridge) PAGET (maid. name (2nd creation)) was born on 18 Jun 1744 in Plas Newydd, Anglesy, Wales; died on 13 Mar 1812 in Westminster, London, England.
5. Caroline Bayly Paget was born in 1746 in Of Plas, Wales; died in 1786.
6. Gertrude Bayly was born in 1748 in Plas-Newyth, Anglesey, Wales; died in 1761.
7. Thomas Sherard Bayly was born on 5 Jan 1748 in died infant.
8. Lt. Col Nicholas Bayly was born in 1749 in Plas Newydd, Anglesey, Wales; died on 6 Jul 1814 in Liverpool, Lancashire, , England.
9. Louisa Augusta Bayly was born on 04 Dec 1750 in Plas-Newth, Angelsy, Wales; died on 21 Sep 1836 in Hampton Court.
10. Thomas Bayley was born about 1751 in Plas-Newth, Anlgesy, Wales; died in infant.
11. Brownlow Bayly was born in 1752 in Plas-Newth, Anlgesy, Wales; died in 1752.
12. Capt Paget Bayly was born in 1753 in Plas Newydd Angelsey; died on 15 Nov 1804.