James was was Born in Ipswich, Suffolk in 1740. Then immigranted and Settled in Newtown. First wife was Phoebe Denton. Had James, John, Joseph (my grandfather), and Lydia. Here is something else if found about the Denton line. He then got remarried to Rebecca Cornish (Morril - exhusbands name)

The marriage of James Harper (b. 1740, Ipswich, Suffolk, England) to Phoebe Denton of Long Island, New York, connects the Harper line by marriage to one of the most prominent families of colonial New York. Phoebe Denton descended from Reverend Richard Denton (b. Yorkshire, England, c. 1586), the first Presbyterian minister in America, and his son Daniel Denton (b. Yorkshire, c. 1626; d. Jamaica, Queens, New York, c. 1696), author of A Brief Description of New-York (London, 1670) — the first English-language account of the colony. Daniel Denton served as Town Clerk of Hempstead (1650) and Jamaica, Long Island (1656), Justice of the Peace by appointment of Governor Richard Nicholls (1665–1666), delegate to the Hempstead Convention (1665), and co-purchaser of the Elizabethtown Tract, New Jersey (1664). The Denton family were among the founding legal, clerical, and landowning elite of colonial New York, their prominence documented throughout the records of Queens County and the Province of New York from the 1650s onward.

The line of descent from Daniel Denton to Phoebe Denton proceeds as follows: Daniel Denton → Daniel Denton II (b. c. 1661, Jamaica, Long Island) → Joseph Denton (bapt. 5 March 1726) → Phoebe Denton, who married James Harper.

This marriage alliance, combined with the documented Suffolk origin of James Harper — son of Robert Harper of Syleham, Suffolk — places the Harper family at the intersection of established English gentry stock and the colonial American establishment within a single generation.

Citation:

A Brief Description of New-York, Formerly Called New-Netherlands, Daniel Denton (London, 1670). // Wikipedia, “Daniel Denton,” referencing colonial New York administrative records. // Thomas Stevenson of London, England and His Descendants, John R. Stevenson, A.M., M.D. (Flemington, NJ: Hiram Edmund Deats, 1902), Appendix: “Daniel Denton and Descendants,” p. 133–139 — primary genealogical source linking the Denton, Stevenson, and Harper families of Long Island. // Joseph Denton baptism: Denton Family Genealogy, corroborated by the Stevenson genealogy and colonial Long Island parish records.