I came across this in A New Dictionary of The Terms Ancient and Modern of the Canting Crew (1699).
Grumbletonians, Malecontents, out of Humour with the Government, for want of a Place, or having lost one.
It's terribly lovely word, and almost relevant to the terrifying conditions that prevail in Today's Britain.
N.B. The Inky Fool has no political opinions whatsoever and believes in government by whim.