Emma Willis is currently busy hosting a summer of Big Brother, but she managed to take time out before that to investigate her roots in Who Do You Think You Are? The TV presenter is keen to learn more about her family in Birmingham and finds out that they go back as far as Victorian times there. However, Emma is surprised to discover that she actually has some Irish heritage as her great grandmother was born here. Emma then heads across to Dublin to find out more but it's not all good news it seems.