I remember Washi Bach,as he used to visit Nan and Taid's smallholding near Amlwch.
Nan used to give him hot water to make tê tramp (tramps tea). She would also give him bread and cheese. If I remember rightly he hardly spoke, but would mumble to himsel. He would also sing a song quietly too.
He was harmless but us kids were always scared of him.I guess on reflection due to his appearance.