Taken from "The History of the Clark Family" by D. Clark McIntosh
 
William was born in 1767 and died in 1843. He was a farmer, and also known as a very good "plowman," living and working on the estate of John Brown, in Carrick, Scotland.  William's wife, Agnes Robson, most likely lived and worked on this estate in a domestic fashion (cook, maid, nanny, etc). It was common to have plowing competitions among the farmers.  A letter exists declaring that at the last plowing competition, William took second place, behind his son Samuel. A direct line of ascendancy is found between William Thomas Clark and Vivian Viola Dolan Herrington.