This family is believed by several modern branches of the family to be related to the famous Captain Sir Henry MORGAN, buccaneer and Governor of Jamaica. These lines divided in the mid C19th and this story has been independently forwarded into the C21st and exists in NZ, Nova Scotia & Australian families.
A researcher living in Wales in the early 1990's was believed to have proof but the name and address has been lost (communicated briefly through a related researcher in NZ). Would love to contact this person if you know of them. Modern MORGAN descendants in Australia have a line which includes BIDMEAD.