
Nance O'Neil, born Gertrude Lamson, was an American stage and screen actress. When she decided to become an actress, her religious father, George Lamson, an auctioneer, denounced his daughter in church for going on the stage and asked the congregation to pray for her. O'Neil's first performance in a professional production was in the role of a nun in Sarah at the Alcazar Theatre in San Francisco on October 16, 1893. At the height of her career, she was promoted on theatre bills and in period trade publications and newspapers as the "American Sarah Bernhardt".

Westward Passage
1932 · as Mrs. von Stael (uncredited)

Ladies of Leisure
1930 · as Mrs. Strong

Cimarron
1931 · as Felice Venable

His Glorious Night
1929 · as Eugenie

The Good Bad Girl
1931 · as Mrs. Henderson

The Florodora Girl
1930 · as Mrs. Vibart

Seven Deadly Sins: Greed
1917

The Toilers
1916 · as Jane Brett

The Fall of the Romanoffs
1918 · as Czarina Alexandra

The Eyes of the World
1930 · as Myra Willard

Hedda Gabler
1917

The Rogue Song
1930 · as Princess Alexandra

Princess Romanoff
1915 · as Princess Fedora Romanoff

The Lady of Scandal
1930 · as Lady Trench

A Woman of Experience
1931 · as Countess Runyi

Kreutzer Sonata
1915 · as Miriam Friedlander

A Criminal at Large
1939 · as Lady Lebanon

Transgression
1931 · as Honora 'Nora' Maury