Emma Willis is the latest to take part in the popular genealogy documentary, in which famous faces trace their family trees. The TV presenter, who considers herself a true Brummie, is keen to learn more about her family in Birmingham, tracing back to Victorian times and her hard-working ancestor James Gretton, a local merchant. The Big Brother host then learns that her father's grandmother was born in Ireland. Surprised to hear of this new line of ancestry, Emma heads across to Dublin to find out more - but she is disturbed by what she learns.