[5] In his 12th century Gesta Regum Anglorum, William of Malmesbury claimed that the grave of Gawain (Latin: Walwen, Welsh: Gwalchmai) was found here around the end of the 11th century and that the castle mound covers the site.

[4] Walwyn's Castle was in the ancient hundred of Roose with its origins in the pre-Norman cantref of Rhôs.

This and several other parishes fell within the mediaeval Barony of Walwyn's Castle, the caput of the Marcher Lord.

[4] The nearby Baptist Chapel, Aenon, Sandy Hill, built 1877, has a cemetery.

Gravestones reveal names linking to families from Walwyn and the local communities.