When using DNA to validate your family tree or to push your tree back further, your shared DNA matches on a particular line play a critical role in confirming the familial connection. But what if it is a line you know little or nothing about, much less who your DNA matches are beyond your most distant known ancestor on that line? How can you find validating matches when you don't know who or what you are looking for? In this presentation, we'll look at a strategy of filtering your DNA matches not by who they match, but rather by who they don't match, to arrive at a pool of matches more likely to be relevant on your unknown line. This can be a particularly useful strategy when only have one known DNA tested descendant with not known or close cousins on the line who have also tested. This meeting is free and open to the public. The in-person meeting will take place from 6:30 pm to 9:00 pm in the Wickers Building, 19921 Poplar Way, Lynnwood in Heritage Park. For those who prefer, the presentation will be live-streamed on Zoom beginning at 7:00 pm