John Langdon Down

British physician and first person to describe Down syndrome (1828-1896) (1828–1896)

Parents

• Hannah Haydon
• Joseph Almond Down

Children

• Everleigh Langdon Langdon-Down
• Reginald Langdon Langdon-Down
• Percival Langdon Langdon-Down
• Lilian Langdon Langdon-Down
• Reginald Langdon Langdon-Down
• Elspie Langdon-Down

Siblings

• Jane Down

Partners

• Mary Crellin