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Downton Abbey has been losing characters like crazy, so now it's time to add some fresh blood! And, lords and ladies, Season 4 does not disappoint:

Virginia Woolf (Christina Carty): Famous English author Virginia Woolf briefly appears in Downton's Season 4 at a party attended by the up-and-coming Lady Edith (Laura Carmichael). Episode she appears in: 1

Lady Shackleton (Dame Harriet Walter): The Dowager isn't lonely this season! Lady Shackleton is another friend of Violet's who has no problem countering the Dowager's famous quips. Episode she appears in: 1

Edna Braithwaite (MyAnna Buring): Name kinda rings a bell? That's because Edna's character isn't exactly new. She's the same mischievous housemaid who almost seduced an emotionally vulnerable Tom at the end of Season 3. This time around, however, Edna's back in the higher ranking position of lady's maid and she almost succeeds at trapping poor Tom Branson for goodEpisodes she'll appear in: 1, 2, 3, and 4

Dame Nellie Melba (Dame Kiri Te Kanawa): This dame is a real historical character! Dame Nellie Melba was one of the most famous singers in the late Victorian era and she hits all the right notes in Episode 3.

The Duchess of Yeovil (Joanna David): This old friend and sparring opponent of Dowager Countess Violet Crawley (Maggie Smith) stops by for a bit in Season 4. Episodes she appears in: 3 and 4

Sir John Bullock (Andrew Alexander): This party guest takes a fancy to Rose MacClare (Lily James) only to drink a little too much during her trip to London. Episodes he appears in: 3 and 4

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Anthony Foyle, Lord Gillingham (played by Tom Cullen): A new suitor for the widowed Lady Mary Crawley (Michelle Dockery) who strongly considers dumping his rumored fiancée, the Hon. (and sensible and boring and not Lady Mary) Mabel Lane Fox, if Mary will have him. So does she? We have the answers... Episodes he'll appear in: 3, 4, 7, and 8

Green, Lord Gillingham's valet (Nigel Harman): With the arrival of Lord Gillingham comes his valet, Mr. Green. Don't be fooled by his seemingly nice manners, however. Mr. Green proves to be one of the most evil characters to ever arrive at the Abbey. Episodes he'll appear in: 3, 4, 7, and 8

Jack Ross (Gary Carr): The show's first black character, Jack's a foot-loosed, fancy-free jazz singer the residents of Downton first meet in the posh club scene of London. Episodes he'll appear in: 4, 6, 7, and 8

Charles Blake (Julian Ovenden): Another likely love interest for Mary, Charles will arrive to help get Downton back to tip-top shape as a member of the British Government, much to the eldest Crawley daughter's disdain. Episodes he'll appear in: 6, 7, and 8

Sarah Bunting (Daisy Lewis): Originally figured to be the new nursemaid for babies George and Sybil, we now think this beautiful redhead might be the new schoolmistress of Downton. Either way, she's bound to catch the eye of one lonely Tom Branson (Allen Leech). Episodes she'll appear in: 7 and 8

Harold Levinson (Paul Giamatti): Sadly, the top-noth actor Paul Giamatti will only be appearing in the Christmas special of the season but we're sure his performance as Countess Cora Crawley's (Elizabeth McGovern) playboy brother will be worth the wait. Episodes he'll appear in: Christmas special

Martha Levinson (Shirley MacLaine): Cora's mother may not be a new character but that doesn't make us any less excited to see her. Episodes she'll appear in: Christmas special

Also look out for Baxter (played by Raquel Cassidy) as a replacement for Sarah O'Brien (Siobhan Finneran).

SourcesThe Radio TimesDownton Abbey Addicts

Elisabeth Kramer is an Assistant Editor at Wetpaint Entertainment and our resident Downton Abbey expert. Follow her on Twitter and Google+!