The link RJ provided had a family tree buried in there - it's sideways so it's hard to read. I'll try to translate:
The Lamb Family (Lincolnshire)
Lamb, a cobbler - his son - John Lamb - his children:
Sarah ("Hetty") about 1715 - 1797, John Lamb - 1725 - 1799 - married in 1761 to Elizabeth Field - 1737 - 1796, and it says at least one more sister, possibly two
John and Elizabeth's children:
Elizabeth - 1762 - died in infancy, John Lamb 1763 - 1821 - married Mrs. Isaac Dowden (says "no issue"), Mary Anne 1764 - 1847, Samuel 1765 - died in infancy, Elizabeth 1768 - died in infancy, Edward 1770 - died in infancy, William 1772 - died in infancy, Charles 1775 - 1834.
There's also a Fields, Brutons, Gladmans (Hertfordshire) Family Tree
Francis Field? - his children: Deborah - married William Dorrell in 1746, and Edward Field - died 1766 - married Mary Bruton (1713-1792) in 1736.
Edward and Mary were the parents of Elizabeth Field (wife of John Lamb)
There is more on the Brutons, but they might be a potential connection point...