Calhoun, Patrick was born on March 21, 1856 in Fort Hill, South Carolina, United States. Son of Andrew Pickens and Margaret Maria (Green) Calhoun.
Educated in private schools.
Bar, 1875, Missouri bar, 1876. Practiced, at Atlanta, 1878-1894. Prominent in consolidation of railway and traction interests, notably Central R.R. of Georgia, Richmond & Danville, and Richmond & West Point Terminal Railway and Warehouse Company for all of which was counsel, 1889-1892.
Devoted attention to consolidation and development of st. rys., taking active part in the consolidation of st. railway systems in Pittsburgh, St. Louis, Baltimore and San Francisco, Director Philadelphia Company, United Rys. of Pittsburg, Houston Oil Corporation of Texas, Calhoun Falls Investment Company, Calhoun Mills. Owner Euclid Heights, Cleveland O. (director Euclid Heights Realty Company), largely interested in real estate in South Carolina., Georgia and Texas. Home: Charlston, South Carolina., Euclid Heights, Cleveland, O., and 9 E. 88th St., New New York Address: 30 Broad St., New York.
Married Sarah porter, November 4, 1885, Admitted to Georgia.