The Birthright, by Bekah. This is a long Pride and Prejudice class-reversal au that's really almost deliciously hyper-romantic. Darcy and Wickham with their positions swapped - so Wickham is the eligible young bachelor and Darcy has the living at Kympton that canon!Wickham chose not to take. Very much Austen as crossed with Eliot - lots of loving descriptions of strong masculine bodies at work, but still fundamentally hopeful of the possibility of true heterosexual love.