On further review, I had Daniel's son John dying before the 1850 census: ". . .was a stone mason by trade, and died at 30. He was in charge of the aqueduct in New York city when it was in progress of construction, and also of the building of the Boston water-works: and, had not misfortune, a stroke of paralysis, overtaken him at thirty, he would have made a national reputation. . ." 1894 Memorial Journal
Now to discover who was John C. Corlett? Maybe daughter Margaret's husband. One journal ref. is to John T. maybe confused with C.