chivalrosity 

describing the act of being chivalrous in the form of generosity

he displayed chivalrosity by giving me a big bouquet of flowers

chivalrosity by sid_from_ice_age February 7, 2024

chivalrosity 

The act of being chivalrous towards another person.

“He decided to open the restaurant door for his date as an act of chivalrosity.”

chivalrosity by sid_from_ice_age March 28, 2024

chivalrility 

The variety of chivalry.
The many ways in which one is chivalrous.
The ability to be extremely chivalrous.

That guy has massive amounts of chivalrility.

chivalrility by raychelrampage July 4, 2011