This is a project to determine the Y chromosome DNA pattern of male Harpers, and variants of the name, and if and how they may be related. This DNA information can often confirm a link that has been proposed from other sources, but could not be proved. If only one or two of the values for the 25 markers differ, one can calculate a most recent commom ancestor (MRCA), and an approximation of the number of generations back. When a match occurs, this provides a pointer to focus the paper trail.