Veteran actor John Rhys-Davies explores his Welsh ancestry and discovers a dramatic story of bravery and sacrifice in the coal mines of Carmarthenshire.
Paralympian Baroness Tanni Grey-Thompson makes a highly emotional journey in search of her Welsh ancestry. She is moved by the discovery that she wasn't the first in her family to be honoured in Buckingham Palace - a story that leads her to uncover a tale of extraordinary heroism in her family.
Singer Shakin' Stevens explores his Welsh ancestry and is moved to learn how his uncle and grandmother fared after the First World War.
John Humphrys explores his Welsh ancestry and learns about the shipwreck that changed the course of his family history.