I'm not sure where this JADWIN line began, but Phoebe may have been the daughter of Jesse Jadwin and Rebekah Anderson. Their marriage (26 July 1788) is listed in "The New York Genealogical and Biographical Records" VOL. xii, 1881, page 137, under the heading "Records of the First and Second Presbyterian Churches of New York". They had quite a few children on the 1800, and subsequent Censuses.
I've verified that Jesse and Rebekah had a son named Renselaer, born in Rensellaer NY (1796). He married Lydia Look, and I know of 2 children, Truman Bragg Jadwin (b.1827, MA) and Phoebe Jadwin (b.1830, MA). Was she perhaps named after her aunt, Phobe?
Renselaer was intimately involved with my DALYS who settled in Grafton, Lorain County, Ohio ca. 1833, and in Pittsfield, Lorain, Ohio in 1836. In 1838, Renselaer is witness to John's and James' naturalizations. And in fact, James Daly named his son, "Renselaer L. Daly". I found "Renselaer" to be a "curious" name for an Irish lad, as it sounded Dutch to me. So as I searched for the reason behind this naming, and I found this connection! I don't know if Renselar helped my Dalys get a start in America, but he must have done something very wonderful for such an honor to happen. In addition to being friends with John and James, Renselaer marries John's widow, Mary Almira Daly in November, 1843! (John and James had both died in 1843).
Renselaer Jadwin died around 1871.
Phoebe was married to George Washington Lovejoy. They lived in Grafton, Oh in 1850 where they have a daughter born, and by 1873 when another daughter is born, they lived in Niles MI. In one of the Censuses, it shows Mary Almira as the step-mother, living with them. Truman also lived in Michigan.