Daniel Rutherford
Daniel Rutherford (3 November 1749 – 15 December 1819) was a Scottish physician, chemist and botanist who is most famous for the isolation of nitrogen in 1772.
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.