William Cosby British military officer, governor of the province of New York (1690–1736) Parents Elizabeth L'Estrange Alexander Cosby Children Grace Cosby Elizabeth Cosby Henry Cosby William Cosby Siblings George Cosby Henry Cosby Alexander Cosby Loftus Cosby Dorcas Cosby Arnold Cosby Isabella Cosby Jane Cosby Thomas Cosby Elizabeth Cosby Anne Cosby Celia Cosby Dudley Cosby Partners Grace Montague
