Recapping the 14th Century
The historian, Barbara Tuchman, called this "The Calamitous 14th Century," and it certainly was that. Famine, plague and murder mark the age as the Middle Ages winds down. Half the Chinese population is gone. A fourth to a third of the Europeans are dead and the peasantry has become reluctant to replace that missing population. The Little Ice Age is progressing which means severe winters and shorter growing seasons. English has become the official language of England instead of Latin or French. Although it is heresy to possess a Bible in English, copies are being made. The 100 Years' War is on hiatus but it will start up soon. The Ottomans have taken Bulgaria and threatening Constantinople. Tamerlane has murdered millions. His name will signify ultimate evil until Hitler makes people forget him. Everything has changed. Everything, and there is more change to come.
War of the Roses: It's Origins
Most people have heard of the War of the Roses but don't know exactly how it began. It begins with King Richard the 2nd's attempt to banish Henry the 4th, the Duke of Lancaster. Henry fights back, and holds the King hostage. Parliament crowns Henry as King. The rationale for doing this is a little thin but no less thin than Richard's claim. Several knights try to rescue Richard, but they are caught. The knights will be hung, disemboweled and their intestines burned while they watch. Sir Thomas Blount will ask to see Heaven so for the knight's soft speech and kindness to the executioner, he is beheaded forthwith. The former King Richard will die shortly thereafter which causes a deep resentment amongst the loyalists. Thus... in 1455... THAT IS FIFTY-FIVE FREAKIN' YEARS LATER... after Henry the 4th's grandson, Henry the 6th, has already taken the throne, that the old resentment will surface and it's going to be a war for the throne of England.  
This Year on Wikipedia
Year 1400, Wikipedia.
- 1400: Sir Thomas Blount, "bowels burning before him", ExecutedToday.com, 2013-Jan-12.
- 1400: John Holland, Earl of Huntingdon, ExecutedToday.com, 2011-Jan-16.