Relation to Gustav Mahler (1860-1911): First husband of a granddaughter
- Born: 19-11-1934, Los Angeles, CA, USA.
- Marriage 1: 03-04-1965, Unknown.
- Wife: Marina Havlicek-Fistoulari (1943).
- Marriage 2: 12-07-1977, Unknown.
- Wife: Penelope Margaret Mackworth-Praed.
- Profession: Composer.
- Residences: Los Angeles, Rome, Warsaw, Carona.
Born in Los Angeles, California, Glass is the son of silent film actor and film executive Gaston Glass. He was educated at the University of Southern California (Bachelor of Music, BM), and was taught by Ingolf Dahl, and Goffredo Petrassi in Rome (on a Fulbright Scholarship). Glass also attended Princeton University under a fellowship, and attended the Institute of International Education in Warsaw with Witold Lutoslawski on a grant. He joined the American Society of Composers, Authors and Publishers, ASCAP) in 1961.
He has been married twice, the first time being to Marina Fistoulari Mahler, on April 3, 1965, and the second time being to Penelope Margaret Mackworth-Praed, on July 12, 1977. Glass and Mackworth-Praed currently live in Carona, Switzerland. Both are currently professors at Franklin College Switzerland. Glass is sometimes credited as Paul E. Glass. Since his retirement from the film world, he has dedicated himself to serious composition.