Percy Alexander MacMahon (b. 26 September, 1854, Sliema, Malta - 25 December, 1929, Bognor Regis, England) was a mathematician, especially noted in connection with the partition of numbers and analysis. Wikipedia
The definitive Wikipedia entry for Percy Alexander MacMahon. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Percy_Alexander_MacMahon
The concept of color-matching tiles based on all the permutations of colors on their edges dates from 1926, when Percy MacMahon invented and introduced Three-Color Squares and Four-Color Triangles as mathematical pastimes. www.daviddarling.info/encyclopedia/M/MacMahon_squares.html
