| Flag of Monmouthshire | |
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| Adopted | 2011 |
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| Designed by | Traditional |
| Proportions | 3:5 |
The flag of Monmouthshire represents the historic county of Monmouthshire (Welsh: Sir Fynwy) in Wales. It was adopted in 2011.
The flag's design features three fleurs-de-lis on a blue and black background.
Symbolism[]
The fleurs-de-lis represent the coat of arms that were attributed by mediæval heralds to King Inyr of the Ancient British Kingdom of Gwent, the area which developed into Monmouthshire.
 Historic counties of Wales |
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 Anglesey |  Brecknockshire |  Caernarfonshire |  Ceredigion |  Carmarthenshire | Denbighshire |  Flintshire |  Glamorgan |  Merionethshire |  Monmouthshire |  Montgomeryshire |  Pembrokeshire | Radnorshire
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