Magowasinghinck, so written in its earliest form in treaty deed of 1677 (Col. Hist. N. Y., xiii) as the name of an Indian family, and also as the name of a certain kill, or river--"Land lying on both sides of Rondout Kill, or river, and known by the name of Moggewarsinck," in survey for Henry Beekman, 1685--"Land on this side of Rondout Kill named _Ragowasinck,_ from the limits of Frederick Hussay, to a kill that runs in the Ronduyt Kill, or where a large rock lies in the kill," grant to George Davis, 1677. The Beekman grant was on both sides of Rondout Creek west and immediately above Honk Falls, where a large rock lying in the kill was the boundmark to which the name referred and from which it was extended to the stream and place. The George Davis grant has not been located, and may never have been taken up. Beekman sold to Peter Lowe in 1708, and the survey of the latter, in 1722, described his boundary as running west from "the great fall called Heneck." In Mr. Lindsay's History of Ulster County it is said that the grant was half a mile wide on the southeast side of the stream and a mile wide on the northwest side. Hon. Th. E. Benedict writes me: "The Rondout is eminently a river of rocks. It rises on the east side of Peekamoose, Table, and Lone mountains, and west side of Hanover Mountain of the Catskills, and flows through chasms of giant rocks. All the way down there are notable rocks reared in midstream. The rock above Honk Falls is hogback shape, a hundred or more feet long. It lies entirely in the stream and divides it into two swift channels which join together just above the falls. Here, amid the roar, the swirl and dash of waters breaking through rocky barriers, with the rapids at the falls, the Great Rock was an object to be remembered as a boundmark." Without knowledge of the locative of the name or of the facts of record concerning it, the late Dr. D. G. Brinton, replying to inquiry, wrote me: "I take _Magow_ or _Moggew-assing-ink_ to be from _Macheu_ (Del.), 'It is great, large'; _achsün,_ 'stone', and _ink_ locative; literally 'at the place of the large stone'." The name does not describe the place where the rock lies. The Davis grant in terms other than the Indian name located one as lying "in the kill," and the other is described in the survey of the patent to Beekman: "Land situate, lying and being upon both sides of Rondout Kill or river, and known by the name of Moggewarsinck, beginning at a great rock stone in the middle of the river and opposite to a marked tree on the south side of the river, between two great rock stones, which is the bounds betwixt it and the purchase of Mr. William Fisher," etc.; both records confirm Dr. Brinton's interpretation. As a generic the name may, like Kahanksan, be found in several places, but the particularly certain place in the Beekman grant was at the falls called Honneck, now Honk.