Philip Cambridge appeared in the 1810 Federal census for South Hadley, Massachusetts, as the head of a household of three people of color. The previous census of 1800 included a Phillip Mitchell, also identified as the head of a household of three people of color. It is possible, even likely, that Phillip Mitchell and Philip Cambridge were the same person. Phillip may have been related to Caesar Cambridge, also of South Hadley and enslaved by the Mitchell family who moved to town from Wethersfield, Connecticut, in 1777. Caesar gained his freedom by serving in the American Revolution. Philip was among several African Americans who lived in South Hadley in the years following the Revolution. (Mark Auslander, “In Search of Caesar Cambridge, a former enslaved man in South Hadley, Massachusetts"; Sylvester Judd, History of Hadley, Including the Early History of Hatfield, South Hadley, Amherst and Granby. Springfield, MA: H.R. Hunting & Company, 1905, p. 402.)