Born into a Jewish family in Władysławow, Lithuania (then Russia), he came to New York City in 1887.
As it happened, he took home the 1st prize ahead of William Ewart Napier, Hermann Helms, and many other well-known players from the local American scene.
In July 1897, Finn led a consultation team to victory against the veteran Wilhelm Steinitz in the rooms of the Metropolitan Chess Club.
Mr. Finn acted as referee at the World Chess Championship 1921 which was played between Emanuel Lasker and José Raúl Capablanca in Havana.
He also served as adjudicator for the college chess league with which Columbia, Harvard, Yale and Princeton were affiliated.