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Thomas Dadford (Junior) (ca. 1761 to 1801) was an English canal engineer, who came from a family of canal engineers. He worked with his father and later independently, contributing to a number of canal schemes before dying at the relatively young age of 40. 
1782 Assisted his father in a survey of the River Trent Navigation.
1790 Worked with his father and Thomas Sheasby on the construction of the Glamorganshire Canal
1790 Assisted his father and brother John with a survey for the Neath Canal Company, and became the engineer for the Neath Canal the next year
1791 Surveyor and engineer for the Leominster Canal until 1795
1797 married Ann Parker of Chaddesley Corbett, Worcestershire. Both were adherents to the Catholic faith. The couple did not have any children.
1800 Surveyed the proposed route for the Aberdare Canal
1801 Died on 2 April at Crickhowell; buried at Llanarth, Monmouthshire.