Lady Penelope O'Brien

English courtier (b. 1616)

Parents

• Anne Fermor
• Barnabas O'Brien, 6th Earl of Thomond

Children

• Mary Howard, Duchess of Norfolk

Siblings

• William Crichton of Sanquhar
• Henry O'Brien, 7th Earl of Thomond

Partners

• Henry Mordaunt, 2nd Earl of Peterborough