Mary Brereton

(1580-1640) (1580–1640)

Parents

• Margaret Savage
• William Brereton, 1st Baron Brereton

Children

• Lady Elizabeth O'Brien
• Lady Anne O'Brien
• Lady Mary O'Brien
• Lady Honora O'Brien
• Lady Margaret O'Brien

Siblings

• Sir John Brereton

Partners

• Henry O'Brien, 5th Earl of Thomond