Mary Gatlin married to Nicholas Purifoy Jr

I am searching for any information regarding a Mary Gatlin that I believe was married to a Nicholas Purifoy Jr (who I believe is my 4 GGF).  I found a will for a William Gatlin dated January 1793.  He leaves all property to his wife Amy and after her death, the remaining property to be divided between his brother Lazarus Gatlin and to the children of William and Amy:  David Gatlin, Mary Purifoy and Sophia Cuthrell.  Any assistance is appreciated.