Macmillan - 1930 - Messrs Martin Falk (German) had been operating influentially in the trade of East Africa for more than thirty years through agents, and during later years through Mr Willy Muller, until 1928, when they opened at Mombasa under the style of Martin Falk (Africa) Ltd. …. The manager at Mombasa is Mr J.C. Franke ….

Gazette - 2/8/16 - Trading with the Enemy - W. Muller

?William Gerhardus - Kenya Regiment 3564