Michael Gordon Ruby was born around 1826 in Pennsylvania to Elizabeth Ruby. His father died sometime before 1850. He lived in Hampden, Pennsylvania, until the early 1850s, when he moved to Indiana. He married Amelia F. Leehick on August 22, 1854, and they had at least three children: Romeo, born around 1860; Charles, born around 1862; and Clarence, born around 1863.
They settled in Albany, Missouri, and Ruby worked as a lawyer. By 1860, he owned $6,020 of real estate and $2,000 of personal property. They moved to Rochester, Missouri, in the 1860s, and Ruby worked as a druggist. By 1870, he owned $3,500 of personal property. They probably moved to Bethany, Missouri, in the 1890s. According to one local writer, he was “an earnest and faithful Christian and one of the pillars of the M[ethodist] E[piscopal] Church.” He died of paralysis in Bethany in April 1899.