Julie follows her roots back to Ireland. On the trail of her great-grandfather Anthony Clarke, Julie's journey takes her to County Mayo where she discovers Anthony was at the centre of a revolutionary movement fighting for land rights.
Tamzin Outhwaite has always been intrigued by her Italian ancestry. Although she remembers her grandfather Remo, she knows very little about his family.
Mary Berry, still going strong at 79, believes she inherits her energy and drive from her father and sets off on a journey to find out more about his family.
Martin Shaw never knew his grandfather, Edwin Shaw, who walked out on his family when Martin's father was just a boy. Martin sets off to find out what happened to this elusive character.
Scottish comedian Billy Connolly always believed his history to be from Scotland. He travels to India in the path of his ancestors. He makes the discovery that his great-great-great grandfather played an important role in Indian History.