Montgomeryshire was one of the very first UK counties to adopt an official flag to represent their region - sadly forgotten by the Flag Institute which does not list it in its directory (as of today).
Montgomeryshire, also known as Maldwyn (Welsh: Sir Drefaldwyn meaning "the Shire of Baldwin's town") is one of thirteen historic counties and a former administrative county of Wales. It is named after its county town, Montgomery, which in turn is named after one of William the Conqueror's main counsellors, Roger de Montgomerie, who was the 1st Earl of Shrewsbury.
Montgomeryshire today constitutes the northern part of the principal area of Powys. Here's one we made earlier!