Banner of Owain Glyndur, Prince of Wales Wales's second national flag, this banner was used historically by Owain Glyndur, the last native Welsh nobleman to hold the title of Prince of Wales. The flag field displays the quartered arms of the Welsh kingdoms of Powys and Deheubarth, where Owain Glyndur reigned until 1416. Flag Specifications: » Size: 150x90 cm (3'x5'). » Material: polyester. For indoor or moderate outdoor use. » With brass eyelets and double stitched for extra strength.