Robert M. Clark (1845-1913) was born in Wycombe, Buckinghamshire, England, and died in Los Angeles, California. He immigrated to the United States with his family when he was eight months old and lived first in Massachusetts, then, by 1855, in Pittston, New York. He married Harriet M. Clark (b. Hodge) in Adams, Massachusetts, in 1865. They settled in North Adams, Massachusetts, where Robert began his career as a railroad engineer with the Fitchburg and the Troy and Boston Railroads. Sometime before 1880 the Clarks moved to Golden, Colorado, where Robert joined the Union Pacific, Denver and Gulf Railway as an engineer and fireman. They moved to Denver, Colorado, around 1884 and Robert finished his engineering career with the Colorado and Southern Railway. Robert and Harriet both joined the First Church of Christ, Scientist, in Boston, Massachusetts, on July 1, 1893. Robert began practicing Christian Science in Denver in the 1890s and was listed as a practitioner in the directory of The Christian Science Journal from 1900 until 1913. He was also a member and chair of the board of directors of First Church of Christ, Scientist, Denver. Around 1911 the Clarks moved to Los Angeles where Robert remained for the rest of his life.

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