Nancy Phyllis Louise Astor (1909-1975)

Hon. Nancy (Astor) Heathcote-Drummond-Willoughby, Countess of Ancaster

She was half-American through her mother and she married another half-American: the Earl of Ancaster's mother was Eloise Breese from New York City. 

Parents

Waldorf Astor

Major The Rt. Hon. Waldorf Astor M.P., D.L., 2nd Viscount Astor

1879-1952

Nancy Astor

The Rt. Hon. Nancy Witcher (Langhorne) Astor, M.P., Viscountess Astor

1879-1964

Spouse

James Heathcote-Drummond-Willoughby

(Gilbert) James Heathcote-Drummond-Willoughby, 3rd Earl of Ancaster

1907-1983

Children

Jane Heathcote-Drummond-Willoughby

Jane Heathcote-Drummond-Willoughby, 28th Baroness de Eresby

b.1934

Associated Houses

Cliveden House

Maidenhead

Drummond Castle

Crieff

Grimsthorpe Castle

Grimsthorpe, Bourne