y Bere , un o gadarnleoedd tywysogion Gwynedd yn y 13eg ganrif , fymryn tu allan i'r pentref. English: Llanfihangel-y-Pennant is a small village and community , which includes Abergynolwyn , in the Meirionnydd area of Gwynedd in Wales . It is located in the foothills of Cadair Idris , and