The actress learns how her grandmother on her dad's side, Greta, acquired the middle name Verdun. On her mum's side, Jodie discovers how her great-great-grandfather worked his way up from child labourer in a coal mine to owning one.

Comedian David Walliams learns about his great-grandfather on his father's side, a tragic shell-shocked World War One veteran, and his great-great-grandfather on his mother's side, a blind organ grinder turned successful traveling showman.