Gray-Dort Motors Ltd was a Canadian automobile manufacturer based in Chatham, Ontario, operational from 1915 until 1925. The company emerged from William Gray & Sons Co. Ltd, a carriage and sleigh-building business established in 1856. By the early 20th century, this company was producing approximately 15,000 wagons, carriages, and sleighs annually. In 1911, a merger with the Manson-Campbell Co. led to a rebranding as William Gray…