Charles Holt was a British comic artist and one of the original contributors to D.C. Thomson's Beano since 1938. His comic strip 'Little Dead-Eye Dick' ran in the magazine in 1938 and in 1949-1950. He was the original artist of 'Uncle Windbag' (1938, 1950) and 'Swanky Lanky Liz' (1948-49), the latter becoming a part of the 'Lord Snooty' strip in 1950. Holt was also the original artist for 'Our Ernie' in Knock-Out in 1939.
Is it possible that Holt is also the author behind the silent comic strip about a sailor, which is signed C.R. Holt? It appeared in at least in the Flemish daily Nieuws van den Dag' as 'Simbad de Zeeman' in 1948-1949 and in the Québec City Sunday comic section of Le Soleil as 'Gros Jean le Marin' in March and April 1950.