Isaac⁵ Kip (1732-1815) was the son of Isaac⁴ (Jacobus³, Isaac², Hendrick¹) and Cornelia (Lewis) Kip. He was a physician in Rhinebeck, New York and was married to his cousin Rachel Kip, daughter of Jacob and Klaartjen Van Wagenen. He was a private in the 6th Regiment, Dutchess County Militia during the Revolution and was a signer of the Articles of Association. Isaac Kip's ancestor, Jacob³ Kip, with his brother Hendrick³, were the original owners (1686) of the tract known as Kipsbergen, now Rhinebeck, New York. It adjoined a tract purchased by Gerrit Artsen (Van Wagenen), Arie Rosa, and Jan Elton (Elting), the properties lay between the Hudson River and Landsman's Kill and were enlarged by additional purchases.
See Kip, Frederic Ellsworth. "History of the Kip Family in America". Montclair, N.J., 1928, pp327-347.
From the description of Survey and map of William Feller's land, a part of Dr. Isaac Kip's farm, Beekman Patent (Rhinebeck Precinct), Dutchess County, New York, 1815. (Unknown). WorldCat record id: 122601623