AU Matthew marries a very much alive Lavinia, and the show that flopped keeps flopping and the dance they danced keeps playing in their heads. Mary realizes she is not the only girl in the world, but a girl he once knew and decides to do the unexpected. While Mary comes back to life, Matthew realizes what he's given up. It's not what you think...or could it be? As of Chap 31, M.

* What if Mary had trusted Matthew with her secret and immediately accepted his first proposal? An alternate universe starting from episode 1x06, interwoven with canon, that spans from 1914 - 1971. [M for sexual content, wartime violence, racial slurs, character death (but Matthew/Mary and Sybil/Tom end happily!)] [STEAMM]

Exiled from Downton Abbey over a scandal, Lady Mary Crawley is ruined. Meanwhile Matthew Crawley has lived a content life in Manchester with his parents, Dr. Reginald Crawley and Isobel Crawley. Before the Earl of Grantham changed his life, his eldest daughter did. An AU story in a different place with different results; created by Willa Dedalus and Apollo888.

Lady Mary Crawley's Diary, starting from series one. Some fluff, humour and a little hurt/comfort thrown in for good measure. Winner of two Highclere Awards! Chapter 29: The engagement party, part two. M/M

Written in response to a drabble request on Tumblr, from thefoodofloveismusic: "Ok, Falling, the first morning after M/M's coming together again, first talks about the past and the future." A modern Downton Abbey ficlet.

A Downton Abbey AU, set in Nazi-occupied France, Mary and Matthew meet as part of the Resistance movement. For MM AU Fest, in response to a prompt on Tumblr.

What would happen if it was Tom who died in the crash instead? The Crawley family are still struggling with the death of their youngest daughter without another tragedy happening. Who will care for Baby Sybil? Will the family pull together to help each other through and what will be revealed as events unfold? Rated T to be on the safe side.

"Mary has had a secret much longer than she knew." Rated M for reference to but not graphic description of marital congress.

S2 and Christmas Special AU - When Matthew returns to Downton for Christmas 1917, sparks fly between him and Mary, who is now engaged to another young officer and a familiar face. Despite the presence of their fiancées, the cousins can not deny the love they still feel. Will they be allowed to act on it, or will their hearts be broken all over again...

Fluffy M/M one-shot with baby George. Downton-era AU.

Mary and Matthew were certain they were destined to be the opposite of Cora and Robert, have three beautiful boys to raise. But when Lily Crawley is welcomed into the world, she is the light of their life and takes Downton Abbey by storm. But how much of this storm can the family bear before they succumb to it?

Missing scene one shot set in series three. An insight into this time in Mary and Matthew's marriage, which went unseen but was interesting to explore. Shadowed in loss they find their personal happiness in the spring and share a loving moment. Spoilers.

September, 1921 could not have been the end for Mary and Matthew, could it? A story about the family who wrote the definition of endurance.

AU. Mary's decision to refuse Sir Richard's proposal leaves her without recourse when Mrs. Bates decides to sell her story to the press. Claiming that her ruin makes her unmarriageable, Mary convinces an injured Matthew to marry her and secure her future.

Matthew spends time with Mary again after Lavinia's death and months of self-loathing and pity. A step in repairing their broken relationship takes place on horseback and Mary's fascination with a certain scar on Matthew's back. Lengthy and Matthew-centric, two-part story. No series 3 spoilers.

Post season 6 with an emphasis on Meredith and Derek. COMPLETE.