Here is Marc McDermott's biography:
Marc McDermott was born Marcus Patrick McDermott on July 24, 1871, in Goulburn, New South Wales, Australia, to Irish-born parents Patrick James McDermott and Annie Massey McDermott. He had a younger sister, May, born in 1881. Marc received his early education at a Jesuit school in Sydney. After his father's sudden death when Marc was 15, he joined a local theater company to support his mother and sister.
Marc's early career in the theater was marked by his discovery by the famous Shakespearean actor George Rignold, who made him his leading man. Marc then worked with Charles Frohman, a New York agent and producer, and appeared in several plays, including "The Second Mrs. Tanqueray" and "Sherlock Holmes."
In 1909, Marc began his film career at Thomas Edison's film studio in the Bronx, New York, where he appeared in over 140 films for Edison. He became one of the most popular leading men of the time, starring in films such as "Les Misérables" and "Lochinvar."
In 1911, Marc costarred with Mary Fuller in Edison's first popular series, "What Ever Happened to Mary?" He also starred with Miriam Nesbitt, whom he married in 1914. Marc's on-screen romance with Miriam grew into a real-life love affair.
In 1914, Marc made film history by appearing in the first-ever "chapter" series, "The Man Who Disappeared." He continued to work in films throughout the 1910s, starring in over 140 films for Edison.
In 1916, Marc left Edison and joined Vitagraph Studio, where he starred in several films. He then moved to Fox Films in 1918, where he starred with Theda Bara in "Kathleen Mavourneen."
In the 1920s, Marc continued to work in films, starring in over 20 films for various studios. He appeared in films such as "He Who Gets Slapped," "Dorothy Vernon of Haddon Hall," and "The Sea Hawk."
Marc's last film was "The Whip," directed by his old friend Charles Brabin. He died on January 5, 1929, at the age of 58, due to complications from cirrhosis of the liver. His ashes were placed in a crypt in the Great Mausoleum at Forest Lawn Cemetery in Glendale, California.