What's the plural form of knightage? Here's the word you're looking for.
Answer
The noun knightage can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be knightage.
However, in more specific contexts, the plural form can also be knightages e.g. in reference to various types of knightages
or a collection of knightages.
Examples
The point is the baronage was not united against King John, and of the knightage only a small percentage was in revolt.