E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
in North Wales; so called from Roger de Montgomery, Earl of Shrewsbury, who won the castle of Baldwyn, lieutenant of the marches to William the Conqueror. Before this time it was called Tre Faldwyn.
Montgomerys division, all on one side. This is a French proverb, and refers to the Free Companies of the sixteenth century, of which Montgomery was a noted chief. The booty he took was all given to his banditti, and nothing was left to the victims. (See LIONS SHARE.)