Sorry to disappoint, Rachel, by "my" Ann (Nancy) Graham didn't marry. She died Intestate in 1828, and her brother Rev John Graham was appointed Administrator of her estate.
I presume that "your" Ann was born sometime between 1780 and 1800, so I searched through my list of baptisms in Wetheral (1665-1864), but cannot find one for your Ann. I have, however, extracted the following baptisms for children with parents living at Wheelbarrow Hall at that time - which might help in your search for Ann's parents.
Child Baptised Father, occupation Mother
Jane 14/07/1793 George Graham, cooper Mary Lancaster
John 21/09/1794 Henry Graham, labourer Isabella Nicholson
John (illegit) 11/08/1799 John Milburne Mary Graham, s/woman
Mary 17/09/1775 Richard Graham Ann
Thomas 06/06/1784 Thomas Graham, labourer Jane
John 13/01/1782 William Graham Mary*
Jane 17/02/1782 William Graham
Mary 06/07/1783 William Graham, labourer Mary*
Mary 23/07/1785 William Graham, labourer Mary*
John (illegit) 06/02/1785 -- Ann Graham
Sarah (illegit) 21/10/1792 -- Ann Graham
*possibly Mary Scarrow - she & Wm married 07/06/1778
Good luck in your search.