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Sherlock star Martin Freeman researches the paternal side of his family tree in this edition.
Sex and the City star Kim Cattrall goes in search of her long lost grandfather in this edition.
Comedian David Mitchell goes in search of his Scottish ancestors in this edition.
TV presenter Kate Humble traces her family tree in this edition, including a surprising link to the inspiration for the movie The Great Escape.
Radio 1 DJ Chris Moyles traces his Irish heritage in this edition of the series.
TV presenter Davina McCall traces the French side of her family in this edition.
The actor Kevin Whately traces his family tree in this edition from grandmother Doris who was a singer to distant ancestors the Thomson brothers who had connections to Oliver Cromwell.
Actress Zoe Wanamaker traces her family tree from the United States to the Ukraine.
Rick Stein looks into his family history, from his father's troubled life during the First World War to his great-grandfather's missionary work in China.