#1 John Drinkwater (1882-1937), poet, playwright, and author of most of the books listed here.
#2 John Drinkwater, compiler of juvenile maths workbooks for Ladybird publishers.
#3 John Drinkwater Bethune (1762-1844), author of A History Of The Late Siege Of Gibraltar
#4 John Frederick (J.F.) Drinkwater, b. 06-09-1947, editor of Fifth Century Gaul