Actor. He is best remembered for his role as 'Dr. Earl Headley' the lung specialist in "Falling Leaves" (1912). The twelve-minute short film which was directed by the groundbreaking French female director Alice Guy, and also starred Magda Foy as 'Little Trixie Thompson,' told the story of a young girl who, overhearing the doctor say that her elder sister will die of tuberculosis before the last leaf falls, determines to save her by tying the leaves onto the trees outside their home. He was born Mace Eustace (some sources say Eustis) Greenleaf, an only child to surveyor Charles Ward Greenleaf and his wife Mary Stanley Eustis Greenleaf in Dixfield, Maine. He was educated locally and eventually became interested in acting when he was older. He headed to New York City and began working on the local stage and soon had starring roles and supporting roles in many stage plays. One of his best-known roles was that of 'Herbert, the King's Forrester' in "The Prisoner Of Zenda" during the 1890s. His other notable roles on the stage include the Broadway productions as, 'Mr. Hunston' in Sir Arthur Wing Pinero's "Trelawney Of The Wells" (1898), which ran at the Lyceum Theatre in New York City. The play which was produced by Daniel Frohman premiered on November 22, 1898, and besides Greenleaf, also starred the likes of, Louis Albion, George C. Boniface, Charles W. Butler, William Courtleigh, John Findlay, Ethel Hornick, Adelaide Keim, Blanche Kelleher, Mary Mannering, Edward J. Morgan, Helma Nelson, W.B. Royson, Hilda Spong, Grant Stewart, H.S. Taber, Elizabeth Tyree, Charles Walcott, Mrs. Charles Walcott, Thomas Whiffen, Mrs. Thomas Whiffen, Edward Wilkinson, and Henry Woodruff. It was made into a film, "The Actress" in 1928. He also appeared in the Broadway production of "The Pride Of Jennico" (1900), which ran at the Criterion Theatre in New York City with 111 performances from March 1900 to June 1900. The play which was written by Abby Sage Richardson and Grace Livingston Furniss was adapted from a novel from Agnes Castle and Egerton Castle and starred besides Greenleaf, the likes of Carl Ahrendt, George Alison, Frank Anderson, Virginia Buchanan, Edward Donnelly, Bertha Galland, James K. Hackett, Thomas A. Hall, Miss Head, Arthur Hoops, James Ottley, Sidney Price, Grace Reals, Amy Ricard, Gertrude Rivers, Brigham Royce, Longley Taylor, and Stephen Wright. The play was directed by Edward E. Rose. It was made into a film of the same name, "The Pride Of Jennico" in 1914. He returned for another engagement of the "The Pride Of Jennico" at the Criterion Theatre in New York City and it ran from September 1900 to October 1900, for an additional 32 performances. This time the play was directed by Charles Frohman, and besides Greenleaf, the cast included, Carl Ahrendt, George Alison, Frank Anderson, Edward Donnelly, Bertha Galland, James K. Hackett, Thomas A. Hall, Arthur Hoops, James Ottley, Sidney Price, Gertrude Rivers, Longley Taylor, George Trimble, and Stephen Wright. He also played the role of 'Myrtle May's lover' in the stage play, "The Parish Priest." He continued appearing in stage plays and then became involved in stock companies and traveled around the United States. He returned to the Broadway stage and appeared in the role of 'The Prince of Wales' in the romantic musical, "Edmond Burke" in 1905. He then ventured towards Hollywood, California, and began appearing in films. He also went to Oakland, California, and appeared in a few stage roles at the Valencia Theater. He settled in Los Angeles, California, about 1910. He made his actual film debut playing the role of 'The Husband' in the drama, "The Golden Rule" in 1911. Working for the Reliance Film Company and the Solax Film Company, he also appeared in, "Thou Shalt Not Lie" (1911), "The Turning Point" (1911), "Her Choice" (1911), "The City" (1911), "Grandfather" (1911), "Divorce" (1911), "The Empty Crib" (1911), "The Greater Love" (1911), "The Track Walker" (1911), "A Daughter Of Law" (1911), "A Happy Thanksgiving" (1911), "Blighted Lives" (1912), "Sealed Lives" (1912), "Child Of The Tenements" (1912), and "The Reformation Of Kid Hogan" (1912). His last film role was as 'Frank Watson' in "The Girl In The Arm-Chair" (1912). In about 1903 or 1906 (sources differ), he married Lucy Tichenor "Ginger" Banning (whose family were rich and owned Santa Catalina Island) in Santa Ana, California. The marriage fell apart when she left the actor for Robert Ross, the son of a prominent judge and newspaperman in 1910. The couple had eloped to Mexico and the actor filed for divorce proceedings siting desertion in 1911. On March 19, 1912, while in Philadelphia, Pennsylvania, he fell seriously ill with pneumonia. The actor who was seemingly in the best of health lingered with the illness for five days and was expected to recover. Unfortunately, he suffered a relapse and he passed away on March 24, 1912, at the age of 39. His body was returned to his hometown of Dixfield, Maine, and he was buried in the Greenwood Cemetery in that city.