No, they are not related.
Danny Rapp was born on May 10, 1942, in Philadelphia, Pennsylvania, USA.
No, he committed suicide in 1983.
Siegfried Rapp died in 1982.
Christian Rapp died in 2004.
Isaac Rapp died in 1933.
Anders Rapp died in 1998.
Torsten Rapp died in 1993.
Jean Rapp died in 1821.
Danny Rapp, Frank Maffei, Joe Terranova, and Dave White
Goldie Rapp died on 1966-07-01.
Karl Rapp died on 1962-05-26.