Dudley Cosby (1662-1729) (1662–1729) Parents Alexander Cosby Elizabeth L'Estrange Children Sarah Cosby Elizabeth Cosby Pole Cosby Siblings Henry Cosby William Cosby Alexander Cosby Loftus Cosby Dorcas Cosby Anne Cosby Celia Cosby Elizabeth Cosby George Cosby Thomas Cosby Jane Cosby Arnold Cosby Isabella Cosby Partners Sarah Pole Ann Owen