Father:
- William Postlethwaite (*1818 - †?)
Mother:
- Hannah (*1816 - †?)
Siblings:
- Mary Postlethwaite (*? - †?)
- Mary Postlethwaite (*? - †?)
- Betsey Postlethwaite (*? - †?)
- Margaret Jane Postlethwaite (*? - †?)
- Hannah Postlethwaite (*? - †?)
- Anny Postlethwaite (*1844 - †?)
- Jenny Postlethwaite (*1846 - †?)
- Mary Eleanor Postlethwaite (*1855 - †?)
Birth: