[2] Her father was a prominent stage actor from Oakland, California, and a direct descendent of Samuel Seabury,[3] while her maternal great-grandfather, Louis Mario Peralta—a founder of the city of Oakland—was sent to San Francisco from his native Spain by King Charles III.

Seabury appeared in numerous films for Griffith from 1911 to 1912, including A Woman Scorned, The Voice of the Child, Billy's Stratagem, For His Son, The Sunbeam, A String of Pearls, and The Root of Evil.

[5] In June 1912, Seabury appeared opposite her father in a Portland-based stage production of Madame Butterfly for the Baker Stock Company.

[8] Before serving as background actors in the production, twenty-nine tribesmen and their chief toured Los Angeles in Cadillacs and La Salles.

[9] In 1937, she was a member of the cast of the CBS Radio Theater dramatization of Brewster's Millions, which featured Jack Benny and Mary Livingstone.