Dorothea Stewart evidently didn’t marry Thomas Dawson until after 1786 … that seems quite late?
1781 - Exchequer Bill Index:
8th May 1781
Plaintiffs = George Longworth & Cathr. his wife.
Defendants = Robert Stewart, John Stewart, Richard Lloyd, Mark Kerr O'Neill, Jas Stewart, Dorothea Stewart & Helena Stewart.
1784 - Exchequer Bill Index:
14th Jan 1784
Plaintiffs = George Longworth & Catherine his wife.
Defendants = Robert Stewart, John Stewart, Richard Lloyd, Felix O'Neill. James Stewart, Dorothea Stewart & Helena Stewart.
1786 – Chancery Bill Index:
15th Dec 1786
Plaintiffs = Helena Stewart a minor, by John Browne her guardian and next friend.
Defendants = John Stewart, Richard Lloyd, Robert Stewart, James Stewart, George Longworth, Cathr his wife, Dorothea Stewart, Daniel McCay, Francis Boyd, George Magee, and John Stewart.
This last one must relate to the agreement in 1785 between Robert and James Stewart, and Daniel McCay and Francis Boyd. Notice Daniel McCay also cropped up in one of the Eagry leases.
John Stewart and Richard Lloyd are probably involved as trustees of James Stewart (d. c1769) of Coleraine. Likewise Mark Ker O'Neill who was a guardian to his children.