Penmynydd is located on Anglesey off the north west coast of Wales, situated on a slight hill on the B5420 road between Menai Bridge and Llangefni,[2] at grid reference SH510743.

[8] A radio communication transmission mast was installed in 2002 a few yards north of the village at the top of the hill.

[10] After Henry died, his widow, Catherine of Valois, married Owen Tudor in secret around 1429 and had three sons.

It was sold following the death of his descendant, another Richard Owen Tudor who had been Sheriff of Anglesey in 1657, and the house passed through several families.

[14] The community was part of the Llanfihangel Ysgeifiog electoral ward for elections to the Isle of Anglesey County Council.