Actress. Married to “Hopalong Cassidy” actor William Boyd, Dorothy was rumored to be the mistress of Buster Keaton. Sebastian appeared in 61 films including “Spite Marriage” (with Keaton), “A Woman of Affairs,” “Our Blushing Brides,” “The Women,” and “Reap the Wild Wind.” (bio by: TLS)  Family links:  Spouse:  William Boyd (1895 – 1972)