There are not really that many cases of major conflicts between cities and feudal lords. Mostly this was because cities got all kinds of charters and right over time directly from kings that put them out of the grip of most feudal lords. They operated quite independently in terms of political and econonomic power from the feudal nobles who mostly had their power base in rural areas. If there were (mostly minor) clashes at all, it was usually about cities' rights and privileges or over the appointment of magistrates that the neighboring lord did not like.
nobles, the Church
king nobles knights peasants
This is a feudal society that you ask about.
fables
nobles
estates-general
It was a winner for the Nobles.
The title of the feudal nobles of Japan.
peasants and townspeople had the same rights as nobles
Vassals
Estates-General
fees peasants paided the nobles during the Crusades
nobles, the Church
king nobles knights peasants
chivalry
Vassals
Equality.