Richard von Friesen was born in 1808.
Bertil von Friesen died in 1990.
Bertil von Friesen was born in 1901.
Otto von Friesen was born in 1870.
Richard von Schaukal died in 1942.
Richard von Helmholtz died in 1934.
Richard von Metternich died in 1895.
Richard von Volkmann died in 1889.
Richard von Frankenberg died in 1973.
Richard von Kühlmann died in 1948.
Gordon Friesen died in 1996.
Richard von Mises died on 1953-07-14.