The Joseph Cox branch of the Cox family had its beginning in the United States in 1708, when John and Rachel Cox lately from England, probably London, were known to be living in New Castle County, Delaware. Shortly thereafter they appeared in the records of the Quaker Churches in Chester and York Counties, Pennsylvania. It is thought that this John Cox was a son of Thomas Cox, a wine merchant of London, but this has not been proved. Thomas Cox was known to be a Quaker, and since John, Thomas and Richard were all Quakers, and their names appeared in the Quaker records of Pennsylvania about this time, it is assumed that they were sons of Thomas.
… John Cox and his wife Rachel had eight children of record. There may have been others whose names have not been found. The known children are listed in the first John Cox family … (see document below)