There are currently about 300 participants in a Willis DNA project. Eleven of those participants are known through Y-DNA testing to descend from John Willis d. 1712 of Wantage in Dorchester County, Maryland. Below is a chart indicating some of John’s descendants. Nine of the current Y-DNA participants are descended from the first seven legs of this chart. The other two do not yet have a paper trail specifying from which of John’s four sons they descend. Currently, none of the participants are from the last two branches, John’s sons Thomas or William.