Gertrude Windecker was born in 1738 in New York to Johann Hartman Windecker and Barbara Elisabetha Bellinger. She married Jacobus Pickard in 1757 in Schenectady, New York. Gertrude died in Herkimer County, New York.
Children
| Name | Birth | Death | Joined with |
| Anna Margarita Pickard (1758-?) | |||
| John Pickard (1760-1827) | 28 May 1760 Big Flats, Herkimer County, New York, United States | 30 August 1827 Ellery, Chautauqua County, New York, United States | Magdelena Maria Garlock (1767-1851) |
| Lea Pickard (1762-?) | |||
| Isabel Pickard (1762-?) | |||
| Anna Pickard (1763-?) | |||
| Catherine Pickard (1765-?) | |||
| Joseph Pickard (1767-1823) | 1767 Little Falls, Herkimer County, New York, United States | 30 July 1823 | Maria Magdalena Forthen (1765-1820) |
| Nicholas Pickard (1768-?) | |||
| Hartman Pickard (1770-?) | |||
| Maria Pickard (1770-?) | |||
| Jacob Pickard (1772-1823) | |||
| Barbara Pickard (1772-?) | |||
| Heinrich Pickard (1773-?) | |||
| Conrad Pickard (1774-?) | |||