ST. MARY’S CITY, MARYLAND—According to a Live Science report, scientists including Éadaoin Harney of the 23andMe Research Institute, Douglas Owsley of the Smithsonian’s National Museum of Natural History, and David Reich of Harvard University examined DNA samples taken from skeletons uncovered in the cemetery at the site of the Brick Chapel in St. Mary’s City, the capital of the British colony of Maryland founded by religious dissenters in 1634. The samples were taken from the remains of 49 people who were buried at the site between 1634 and 1730. The researchers identified the remains of Thomas Greene, the second colonial governor of Maryland, and Philip Calvert, the fifth governor of the colony,...