William O'Brien, 2nd Earl of Inchiquin

Irish nobleman (1640–1692)

Parents

• Elizabeth St. Leger
• Murrough O'Brien, 1st Earl of Inchiquin

Children

• Henry O'Brien
• William O'Brien, 3rd Earl of Inchiquin
• Lady Margaret O'Brien
• unknown son O'Brien

Siblings

• John O'Brien
• Charles O'Brien
• Lady Elizabeth O'Brien
• Lady Honora O'Brien
• Lady Mary O'Brien

Partners

• Margareth Boyle
• Elizabeth Herbert