Oehmler, Leo was born on August 15, 1867 in Pittsburgh, Pennsylvania, United States. Son of Rudolf Christian and Elizabeth (Foerster) Oehmler.
Certificate, Western University of Pennsylvania, 1885. Graduate Royal Conservatory of Music, Schwarzburg-Sondershausen, and Sterns Conservatory, Berlin, Germany. Pupil of Sauret, Radecke, Nolte, Gruenberg, Kayser and others.
Teacher piano, violin, harmony and composition in Pittsburgh and neighboring cities for many years. Moved to Pasadena, California, 1907.
Married Lillian Katherine Heche, December 25, 1911.