Leonard Roth
Leonard Roth was a mathematician working in the Italian school of algebraic geometry. He introduced an example of a unirational variety that was not rational.
Roth was born in Edmonton, London. He was educated at Latymer Upper School, Dulwich College and Clare College, Cambridge, where he graduated as a Wrangler in 1926. He died in 1968 in Pittsburgh, Pennsylvania. His sister was Queenie Roth, literary critic and wife of F. R. Leavis.