Paralympian Jonnie Peacock looks back through the generations and ends up captivated by his four-times-great-grandmother.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Citizen Khan star Adil Ray explored rumours of a link to African royalty.

Citizen Khan star Adil Ray explored rumours of a link to African royalty.

Presenter Emma Willis' family history leads her down two very different paths in Ireland.

Presenter Emma Willis' family history leads her down two very different paths in Ireland.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Strictly judge Craig Revel Horwood heads to Australia to learn more about his family.

Sports broadcaster Clare Balding uncovers an extraordinary American dynasty.

Citizen Khan star Adil Ray explored rumours of a link to African royalty.

Presenter Emma Willis' family history leads her down two very different paths in Ireland.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Actor Charles Dance explores his family history and is determined to learn about his dad.

Pop star Lulu travels to Glasgow to get to the bottom of a family mystery.

Pop star Lulu travels to Glasgow to get to the bottom of a family mystery.

Fearne Cotton learns about her Welsh great-grandfather who worked down a coal mine at 13.

Fearne Cotton learns about her Welsh great-grandfather who worked down a coal mine at 13.

Noel Clarke visits the Caribbean to learn more about his family.

Noel Clarke visits the Caribbean to learn more about his family.

Actress Lisa Hammond wants to understand her grandfather's WWII experiences.

Actress Lisa Hammond wants to understand her grandfather's WWII experiences.

Ruby Wax learns about the plight of her parents, who fled the Nazis and went to America.

Ruby Wax learns about the plight of her parents, who fled the Nazis and went to America.

Pop star Lulu travels to Glasgow to get to the bottom of a family mystery.

Fearne Cotton learns about her Welsh great-grandfather who worked down a coal mine at 13.