Katherine Bigham

12th Lady Nairne, eldest child of Henry Petty-Fitzmaurice, 6th Marquess of Lansdowne (1912-1995) (1912–1995)

Parents

• Elizabeth Caroline Hope
• Henry William Edmund Petty-Fitzmaurice, 6th Marquess of Lansdowne

Children

• David Bigham
• Andrew Bigham
• Richard Bigham, 4th Viscount Mersey

Siblings

• Lady Elizabeth Mary Petty-FitzMaurice
• Lord Edward Norman Petty-FitzMaurice
• Henry Maurice John Petty-FitzMaurice, Earl of Kerry
• Charles Hope Petty-Fitzmaurice, 7th Marquess of Lansdowne

Partners

• Edward Bigham, 3rd Viscount Mersey