Mary Janssen

(died 1770) (1715–1770)

Parents

• Williamsa Henley
• Sir Theodore Janssen, 1st Baronet

Children

• Louisa Calvert
• Caroline Eden
• Frederick Calvert, 6th Baron Baltimore

Siblings

• Barbara Janssen
• Sir Henry Janssen, 3rd Bt.
• William Janssen
• Abraham Janssen
• Stephen Theodore Janssen

Partners

• Charles Calvert, 5th Baron Baltimore