One whose occupation is to tan hides or to convert them into leather by tanning.
"tanner, n.1". OED Online. December 2015. Oxford University Press. http://www.oed.com/view/Entry/197558?rskey=3Q5WKF&result=1&isAdvanced=false (accessed December 21, 2015).
GW employed John Beedy throughout the 1760s to dress and tan hides.