The DAVID LAUGHTON estate was listed in a record book housed at the Archives of Michigan, St. Clair County, Record of Proceedings 1835-1838:
(Page 46) Estate of David Laughton, Deceased
Twp. of Clay, St. Clair County [Territory of] Michigan
3 August 1836
Jacob Harsen applied for Letters of Administration on the estate of David Laughton, lage of the County of Cook in the State of Illinois, deceased
Jacob Harsen of the Township of Clay as principal and William Harsen and Francis Harsen of same place, sureties
This David Laughton mentioned in treaty?