First Families of Chester County, Pennsylvania: Volume 1 - John Pitts Launey. Chester County was officially opened for settlement in 1682. Using a wide variety of sources, this volume of first families provides data concerning when and where they settled as well as information on early churches and meeting places. Families covered in this volume include the following: Allen, Baldwin, Bonsall, Green, Hibberd, Maris, Sharpless, Townsend, Trimble, Vernon, Yarnall, and many more. (1999), 2007, 5½x8½, paper, index, 196 pp.