Wales · Geographic county

Glamorgan county flag

Morgannwg

Flag artwork supplied by the Flag Institute UK Flag Registry; reproduced as the registered public flag. Optimised to WebP without changing the design. Artwork and public-use information.

Registered county flag

County	Glamorgan
Geographical grouping	Wales
Registration recorded by British County Flags	24 September 2013
Design attribution	Traditional
Status checked	24 October 2026

Design and symbolism

Three silver chevrons rise across a red field. The spare, repeated geometry is known as Iestyn’s Chevrons.

History and use

The arms are attributed to Iestyn ap Gwrgant and are associated with his descendants. Their documented heraldic use reaches back to the medieval period. The Glamorgan History Society requested registration, supported by local historical organisations, turning an established county emblem into a clearly recorded public flag.

Sources and acknowledgements

County geography follows the Historic Counties Standard, published by the Historic Counties Trust, as used by RealCounties. Read our source and status guidance.

Flag-profile text: Historic Counties Institute, CC BY-SA 3.0, drawing on the credited research. Artwork has its own credit above.