Edmund Taylor Whittaker (1873-1956) studied mathematics at Trinity College, Cambridge. He became Professor of Mathematics at the University of Edinburgh in 1911 and taught there for the rest of his career, specializing in applied mathematics, mathematical physics, and special functions.
George Neale Watson (1886-1965) also studied at Trinity College, Cambridge. From 1914 to 1918 he was a lecturer at University College, London, and in 1918 became Professor of Mathematics at the University of Birmingham.