Bertrand Russel was a British

Bertrand Russell, in full name Bertrand Arthur William Russell. British philosopher, logician, and social reformer, founding figure in the analytic movement in Anglo-American philosophy, and recipient of the Nobel Prize for Literature in 1950. Russell’s contributions to Logic, epistemology, and philosophy in mathematics established him as one of the foremost philosophers of the 20th century.
Source: Britannica.com