Tom, Do you know the parents of your Katherine Postlewait ? I have a Dr. William Postlewait who married Martha Waters Smith Sept.13,1846. They were on the 1870 Jefferson co.Ky census, for some reason I didnt write down the childrens names. Your Katherine could possibly be their daughter tho. Martha Waters Smiths parents were Peter and Katherine Miller Smith of Bullitt co.Ky. Martha Poslewait b.ca 1826 Bullitt co. Ky, I dont have any dates for Dr.Postlewait. Hope this has helped some, Im sure the 1870 Jeff co.census lists names of their children. thanks, Joan in Tn