BIRTHS
Jonathan Gosman Wynkoop 13 May 1827
Catherine Van Dyck Wynkoop 9 Nov 1826
Margaret Wright Wynkoop 9 May 1827
Francis Sylvester Wynkoop 1 Sept 1830
Henry Rankin Wynkoop 20 Sept 1828, (d. Nov 1829 age 13 M 13 D)
Anna Gosman Wynkoop 4 Feb 1833, (d. Mar 1904).

DEATHS
Henry Rankin Wynkoop 1 Nov 1829 age 13 M 13 D
Mrs Margaret Wright Wynkoop departed this life 24 Feb 1833 age 40 Y 3 M (?21 ) D
Rev. P. S. Wynkoop departed this life at Hudson, Columbia Co. on the first of (?Nov) 1848 age 61 Y 7 M 3 D
Mrs Lydia Lasell departed this life at Syracuse, NY on 11 May 1857, she was buried at Schoharie, NY at the side of her husband Dr. Sam'l Mills Lasell, who died Dec 1851, her age was 37 Y 4 M 11 D
Mrs Margaret W. DuBois departed this life at Brooklyn, NY 2 Feb 1861, buried at Kingston, Ulster Co., NY
Francis Sylvester Wynkoop died at Kingston on 29 June 1877
Catherine Van Dyck Wynkoop died at Hudson on 10 Mar 1887, buried at Kinderhook
Mrs Eliza Kittle Porter died in Claverack, NY on 7 Oct 1889
Peter Silvester Wynkoop died in Buffalo, NY on 22 May 1888, buried in Hudson, NY
Robert G. Wynkoop died at Syracuse, NY on 17 Apr 1891.

MARRIAGES
Eliza Kittle Wynkoop married 7 Jan 1845 to Rev. Elbert Stotoff Porter at Bloomington Grove
Robert G. Wynkoop married at Auburn on 20 May 1846 to Caroline C. Wood
Peter S. Wynkoop, Jr. married at Hudson on 2 June 1866 to Elizabeth C. Miller
Lydia S. Wynkoop married at Blooming Grove (Rens. Co., NY) on 8 Sept 1848 to Dr. Samuel Mills Lasell
Mary J. Wynkoop married at Hudson, NY on 27 Jan 1853 to Dr. E(ldredge) Simpson
Jonathan G. Wynkoop married at Syracuse, NY on 8 May 1856 to Mary Judson Hawley.

BIRTHS
Peter Sylvester Wynkoop 28 Mar 1787
Margaret Wright Gosman 27 Nov 1792
Joanna Gosman Wynkoop 23 Oct 1811
Robert Gosman Wynkoop 3 Dec 1816
Peter Sylvester Wynkoop, Jr. 16 May 1818
Lydia Sylvester Wynkoop 31 Dec 1819
Eliza Kittle Wynkoop 4 Sept 1821
Mary Jane Wynkoop 21 Mar 1823

MARRIAGES
Jonathan G. Wynkoop & Mary J. Hawley married 8 May 1856
Emma Judson Wynkoop & Dr. Crawford Ellsworth Fritts married 14 June 1882
Wm. Augustus Wynkoop & Mary M. Jaycox married 17 Sept 1884
Edward Judson Wynkoop & Florence Ida Niver married 15 June 1895
Wm. Kelly Beardsley & Florence Wynkoop married 16 March 1929
Wm. Niver Wynkoop & Janet Mixer Smith married 12 Oct 1934.

DEATHS
Jonathan Gosman Wynkoop died 19 Oct 1905 at 6 AM age 81 Y 5 M buried 21 Oct 1905 in the Oakwood Cemetery at Syracuse, NY.

Source:

Kuchta, Emma, "Date of Bible 1825. Family Record", The Foothills Inquirer, Volume 6, Number 3 (August 1986): page 89

    Notes from Richard Wynkoop's 1904 edition of Wynkoop Genealogy in the United States of America:

    451. Peter Silvester Wynkoop, Rev., (John C. 205, Capt. Cornelius C., 65, Cornelius 9, Maj. Johannes 2, Cornelius 1,) baptized March 22, 1787, Kinderhoek: died November 1, 1848, in Hudson, N. Y.: married, December 12, 1814, Margaret W. Gosman, daughter of Robert Gosman, and sister of Rev. Dr. John Gosman.
    Peter was graduated from Union College, in 1807, and studied law in the office of his uncle, Judge Silvester, in Kinderhoek, and began the practice of his profession, in 1810. But he abandoned that profession, and entered the theological seminary at New Brunswick, and was licensed by the classis of New Brunswick, in 1813: was assistant of Vredenburgh, at Raritan, 1813-14: pastor at Catskill, 1814-17: Hyde Park (Staatsburgh), 1817-20: Hyde Park and Pleasant Plain, 1820-22: Ghent, Jan. 9, 1823-June 21, 1843, also Hillsdale, 1825-40, and Claverack 2d, now Mellenville, in 1842: Blooming Grove, 1844-48.
    The Rev. Edwin Holmes said of him, in a funeral sermon, that "he preached the Gospel as to dying men, presenting its essential truths, with clearness, skillfulness, and persistency, and avoided doubtful questions. His personal piety was conspicuous in his habits, and in his conscientious deportment. His labors were largely blessed."
    The Rev. John Rugan wrote of him to the compiler, from Fultonham, O., in 1863, as follows: "I was pastor of the Lutheran congregation at Ghent, for several years, from 1850, and heard a great deal of Dominie Wynkoop, whose memory, together with that of Rev. Jacob Berger, was cherished with love and respect by the entire community. To that people, these two men appeared to be the standard of ministerial faithfulness, character, and piety; and if, in conversation or argument, any saying or opinion, of Dominie Wynkoop, or Dominie Berger, could be adduced, it was considered as the end of controversy. I learned to respect the character of those men, whose influence for good, both during life, and after death, was so great, and whose reputation, in all that truly ennobles man, was so high."
    Children of Rev. Peter S. and Margaret W. Wynkoop:
803. Joanna Gosman: bp. Oct. 23, 1815, Catskill: died Jan. 29, 1898. She had lived in Brooklyn, N. Y.
804. Robert Gosman: b. Dec. 3, 1816: m. Carrie C. Wood.
805. Peter Silvester: b. May 16, 1818: m. Elizabeth C. Miller.
806. Lydia Silvester: b. Dec. 31, 1819: m. Dr. Samuel M. Lasell.
807. Eliza Kittle: b. Sept. 4, 1821: m. Rev. Dr. Elbert S. Porter.
808. Mary Jane: b. Mch. 21, 1823: m. Dr. Elbridge Simpson.
809. Jonathan Gosman: b. May 13, 1824: m. Mary J. Hawley.
810. Catharine Van Dyke: b. Nov. 9, 1825: d. Mch. 10, 1887, in Syracuse, N. Y.
811. Margaret Wright: b. May 9, 1827: m. Rev. Dr. Anson Du Bois.
812. Francis Silvester: b. Sept. 1, 1830: m., 1st, Rachel Van Vleck; m., 2d, Frances Van Vleck.
813. Anna Gosman: b. Feb. 4, 1833: m. Rev. Dr. Anson Du Bois.