Thanks Diana , Will do some follow up and hope to find a connection. Janis Definitely worth following up. CDY is so volatile, some people even ignore it. YCAII and 511 are not usually grouped among the "fast" markers. The "slop factor" in terms of number of generations is so great, calculating it is pretty much a waste of time, IMO. I prefer to think in terms of whether the match could or could not be within "genealogical time." With a GD of four, it probably is, especially if you have the same surname. This page gives a realistic, practical appraisal: http://www.familytreedna.com/genetic-distance-markers.aspx?testtype=67