Daniel Rutherford
The son of Professor John Rutherford (1695–1779) and his wife, Anne Mackay, Daniel Rutherford was born in Edinburgh on 3 November 1749. He began college at the age of 16 at Mundell's School on the West Bow close to his family home, and then studied medicine under William Cullen and Joseph Black at the University of Edinburgh, graduating with a doctorate (MD) in 1772. From 1775 to 1786 he practiced as a physician in Edinburgh.
Daniel O'Day
Daniel O'Day, Jr. (March 11, 1870 in Titusville, Pennsylvania – May 31, 1916 in Rye, New York) was one of northwestern Pennsylvania's earliest independent refiners to be brought into John D. Rockefeller's Standard Oil Company. O'Day would eventually manage crews that laid pipe to bring oil from wells to the railroads. Despite attempts by many Standard Oil critics/enemies to sabotage the pipelines, O'Day's crews were skilled and efficient enough to lay pipe faster than it could be destroyed. This effectively ended the days of rolling wooden barrels of oil across the country to rail hubs, a service for which Standard might be hustled out of as much as 3 dollars at a time when the oil itself was worth $1.25.