For your convenience. Presented without comment, just a link with title, play, pairing or characters, and the rating -- I haven't had a chance to read all of them yet. Still, I can safely say that it was a banner year for histories fics!
FIRST TETRALOGY
And the Spare (Henry VI, York boys, PG)
An Exchange of Favours (Henry VI, York boys, AUish [modern-day]; PG-13)
Wooed and Won (Richard III, Richard/Anne, G)
SECOND TETRALOGY
regem angelorum imitari (Richard II, Richard & Henry, PG)
Winter: 1399 (Richard II, Richard/Henry, listed as G but this might be erroneous, as the content's a bit stronger than that)
My Day of Trouble (Henry IV, Hal/Scroope, R)
Chimes at Midnight (Henry IV, Hal & Hotspur, AU [WWI], PG-13)