Seely’s brothers made a living as the Travilla Brothers, a popular vaudeville act featuring huge onstage stunts (such as the seal with the human brain stunt)
The seal stunt is thought to be why Sybil chose her stage name ‘Seely’
Sybil joined a studio as an extra and bit player and appeared in a couple features
She was one of Mack Sennett’s ‘Bathing Beauties’ and continued to feature in his shorts until the end of the 1910s
1920 – she was the leading lady of Buster Keaton’s One Week
Sybil’s naturalistic and charming performance complimented Keaton’s ‘blank pan’ persona
She was given generous amounts of screentime which wasn’t the norm for supporting actors back then
Sybil retires from the screen to raise her son and devote herself to being a homemaker