There are some references online to "Richard Czerwonky (1886-1949), [...] an American musician of Polish descent". This does at least gives the years of birth and death.
Richard Hall - composer - was born in 1903.
Richard Hoffman - composer - died in 1909.
Lyrics by Oscar Hammerstein II and music by Richard Rodgers, from their show "Carousel."
Richard Rodgers, the composer who collaborated with Lorenz Hart and then with Oscar Hammerstein, died on 30 December 1979.
Richard Rodgers
I may have some.
Richard Strauss was a composer and conductor born in Munich in 1864. More information is available on the link below.
Richard Hall - composer - was born in 1903.
Richard Hoffman - composer - died in 1909.
Richard Johnston - composer - was born in 1917.
Richard Hoffman - composer - was born in 1831.
Richard Stone - composer - was born in 1953.
Richard Stone - composer - died in 2001.
Richard Harris - composer - was born in 1968.
Richard Egan - composer - was born in 1959.
Richard Hofmann - composer - was born in 1844.
Richard Hofmann - composer - died in 1918.