Jacob Jacobse was a son of Jacob Janse Schermerhorn and Jannetie Egmont, born about 1662.
He was master of the Sloop "Star," plying between Albany and New York from 1681 to 1684. His brother Cornelius was subsequently master of the same vessel. The sloop probably belonged to his father, Jacob Janse, and was used in connection with Jacob Janse's trading and exporting business.
Jacob Jacobse married Gerritie Hendrickse Van Buren, daughter of Hendrick Cornelise Van Buren and Elizabeth Van Slyck. After the marriage he settled in Schodack (Rensselaer County, New York) on property belonging to his father. Jacob Jacobse received the land in 1700 when his father's property was divided, and his descendants retained the original farm until it was sold by Barent C. Schermerhorn in 1836.
Children born to the marriage were:
Catalyntje, bp. Aug. 26, 1683; m. May 18, 1706, in Albany, Abraham Van Valkenburgh of Kinderhook.
Jacob, Jr., bp. Dec. 27, 1685, in Albany; m. Antie Van Vechten.
Hendrick, bp. Oct. 16, 1687, in Albany; m. Elsie Jans Albertse Bratt.
Cornelius, bp. Sept. 22, 1689, in Albany; m. Margarita Jans Albertse Bratt.
Machtelt, bp. Jan. 3, 1692, in Albany.
Jannetie, bp. May 6, 1694., in Albany.
Elizabeth, bp. Aug. 28, 1698, in Albany; m. Feb. 13, 1728, in Albany, Roelef Jansen.
Johannes, bp. July 21, 1700, in Albany; m. Engeltie Gardenier.
Reyer, bp. Feb. 24, 1702, in Albany; m. (1) Geertje Ten Eyck; m. (2) Marytje Dekker Osterhout.
↑ Van Valkenburg Family in America, vol I., Gateway Press, 1981, p.103
It may be possible to confirm family relationships with Jacob by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Jacob:
Schermerhorn-25 and Schermerhorn-21 appear to represent the same person because: Although Schermerhorn-25 has a first name of "Janse," all other details (birthdate, parents, child) are consistent with Jacob Jacobse Schermerhorn, Schermerhorn-21. Note that the patronymic "Janse" is unlikely to have been a given name for a New Netherland settler.
Schermerhorn-31 and Schermerhorn-21 appear to represent the same person because: There is no question that they are intended to represent the same person. Same parents, same birthdate, same wife. There is only one known Schermerhorn family in New Netherland at this time and only one known record of a Jacob Jacobse Schermerhorn in New Netherland born around 1662.