Actress Samantha Womack delves into her family history, uncovering the shocking truth about her great-grandfather's military career.

Gregg Wallace sets out to solve a long-standing mystery: what happened to his great-grandfather, who abandoned his family?

Patrick Stewart investigates his father's extraordinary war career and discovers the shocking impact it had on his father's character.

Annie Lennox uncovers tangled family relationships blighted by illegitimacy and poverty on her late grandmother's branch of the family.

Comedian and actor Hugh Dennis's grandfathers both fought in the First World War, but rarely spoke about what they went through. Hugh uncovers their very different wartime experiences.

Actress Alex Kingston sets out to learn more about her great-grandfather William Keevil, who died during the First World War.

John Barnes investigates the role his grandfather, Frank Hill, played in Jamaica's struggle for self-rule. He finds outs how his grandfather became the subject of secret telegrams, and why he was interned by the British during World War 2.