The excerpt from the letters best exemplifies the firsthand account of Medieval English culture is:
"...yesterday began the great council, to wich all the states of the land shall come to..."
This excerpt reveal us how the Medieval English culture was being organized by a great council, where the states of the land were invited to discuss the affairs of the country with the king.
The other excerpts tell us more about sentimental concerns than the culture being held at the time.