Jean Guillaume Poswick
- Born on January 14, 1678
- Deceased on June 19, 1762, at the age of 84 years
Parents
- Léonard Poswick (1635 - 1707)
- Elisabeth Hinckens (1650 - 1712)
Family
- Married in 1704, with Anne Catherine Basaille (1689 - 1754), issuing
- Jean Guillaume (1716 - 1782)
Albertine Josèphe (1728 - 1783)