Mark, along with his twin brother and co-author Jonathan, is an archaeology graduate of Cardiff University and lifelong resident of Barry Island. Both have a keen interest and extensive knowledge of Barry Island’s history, and have worked on many archaeological sites in Glamorgan and beyond. Jonathan, along with his twin brother and co-author Mark, is an archaeology graduate of Cardiff University and lifelong resident of Barry Island. Both have a keen interest and extensive knowledge of Barry Island’s history, and have worked on many archaeological sites in Glamorgan and beyond.