Film actor Michael Sheen makes an emotional journey to uncover his Welsh ancestry where he discovers his family's bigamous past, learns the story of his lion taming great-grandmother and uncovers a moving family secret.

BBC Breakfast news presenter Sian Williams takes an emotional journey to uncover her Welsh ancestry. She learns of her family's lost millions, their role in one of Welsh history's biggest stories and is reduced to tears on discovering a moving family secret.

Singer Michael Ball makes an emotional journey to uncover his Welsh ancestry. He discovers the story of a chapel minister who fell spectacularly from grace and the double family tragedy that drove the 'Ball' family from Wales more than a century ago.

Ruth Madoc makes an emotional journey to uncover her Welsh ancestry but nothing has prepared her for the news that she's related to one of the biggest names in Welsh history.

Former Blue Peter presenter Sarah Greene makes an emotional journey to uncover her Welsh ancestry and discovers her hidden family tree and the story of a grisly family murder.