The town of Beaumaris was constructed by Edward I in 1296, following the English king's successful invasion of North Wales.

[1] Limited foundations appear to have been built for a protective circuit, but despite requests from the townspeople for a town wall in 1315, none was constructed.

[1] In 1400 the Welsh prince Owain Glyndŵr rose in rebellion against English rule, and took Beaumaris in 1403; the town was not recovered until 1405.

[2] This necessitated the moving of a number of residents whose houses fell in the way of the new defences.

[3] Today only a few fragments of the wall survive; these are protected as a scheduled monument and a grade I listed building.