Mary Ursula Addington

Parents

• Mary Young
• William Leonard Addington, 2nd Viscount Sidmouth

Children

Siblings

• William Addington, 3rd Viscount Sidmouth
• unknown Addington
• Caroline Penelope Addington
• Louisa Charlotte Addington
• Known Addington
• Charles John Addington
• Leonard Allen Addington
• Hiley Robert Addington
• Frances Sophia Addington

Partners

• Miles Charles Seton