Green’s Dictionary of Slang

charley howard n.

[rhy. sl.; poss. based on Tennyson ‘The Revenge’: ‘Then sware Lord Thomas Howard: “’Fore God I am no coward”’; however, note charlie adj. (1)]

a coward.

[UK] in J. Curtis Gilt Kid.
[US]Maurer & Baker ‘“Aus.” Rhyming Argot’ in AS XIX:3.
[UK]J. Franklyn Dict. of Rhy. Sl.
[UK]Dodson & Saczek Dict. of Cockney Rhy. Sl.
[UK]R. Puxley Cockney Rabbit.
[UK]B. Kirkpatrick Wicked Cockney Rhy. Sl.