Question: who plays cora's brother on downton abbey
Answer: Melba Opera singer Series 4 Michael Benz Ethan Slade Harold Levinson 's valet Christmas Special 2013 Alastair Bruce Lord Chamberlain Chamberlain to the King Christmas Special 2013 Valerie Dane Queen Mary Queen Consort to George V Christmas Special 2013 Oliver Dimsdale Prince of Wales Heir to the British throne Christmas Special 2013 Poppy Drayton The Hon Madeleine Allsopp Rose 's friend Christmas Special 2013 James Fox William `` Billy '' Allsopp , Baron Aysgarth Madeleine 's father Christmas Special 2013 Paul Giamatti Harold Levinson Cora 's brother Christmas Special 2013 Janet Montgomery Freda Dudley Ward Mistress of the Prince of Wales Christmas Special 2013 Jonathan Townsend Duke of York Younger brother to the Prince of Wales Christmas Special 2013 Guy Williams George V King of the United Kingdom , Emperor of India Christmas Special 2013 Dean Ashton Evans Tombstone maker Series 5 Devon Black Receptionist receptionist Series 5 -- 6 Louise Calf Kitty Colthurst Friend of the Crawleys Series 5 Anna Chancellor Dowager Lady