Meet Downton Abbey star Dame Maggie Smith's family – and you may recognise her sons

• Dame Maggie Smith is one of the nation's favourite actors having starred in a number of huge films and TV shows over her successful career spanning over 50 years, which is set to be celebrated in the Channel 5 film The Marvellous Maggie Smith: A Celebration, which her co-stars including Hugh Bonneville will gather to discuss her incredible career. MORE: Downton Abbey: A New Era review: Dame Maggie Smith's presence towers The 85-year-old is perhaps best known for her work in the long-running peri