Chivalry is a term from the medieval (Middle Ages) institution of knighthood, which has an aristocratic military origin of individual training and service to others. It is usually associated with ideals of knightly virtues, honor and courtly love.
In English, the word is first attested in 1292, as a loan from Old French shevalerie "knighthood", an abstract noun formed in the 11th century based on chevalier "knight", ultimately from Medieval Latin caballarius "horseman"; cavalry is from the Italian form of the same word, loaned via Middle French into English around 1540.
Between the 11th century and 15th centuries medieval writers often used the word shivalry, in meanings that changed over time, generally moving from the original concrete meaning of "status or fee associated with military follower owning a war horse" towards the moral ideal of the Christian warrior ethos propagated in the Romance genre which became popular in the 12th century, and the ideal of courtly love propagated in the contemporary Minnesang and related genres. By the 15th century, the term had become mostly detached from its military origins, not least because the rise of infantry in the 14th century had essentially confined knightly horsemanship to the tournament grounds, and essentially expressed a literary ideal of moral and courteous behavior.
In modern times, in The Broad-Stone of Honour, or Rules for the Gentlemen of England(1822), Kenelm Henry Digby wrote the following definition: "Chivalry is only a name for that general spirit or state of mind which disposes men to heroic actions, and keeps them conversant with all that (they find) beautiful and sublime in the intellectual and moral world." In essence, modern day Chivalry is a concept of, protecting all that is apealing and interesing, including companion(s). And from this, the meaning of chivalry diverges as the meaning of the word companion is different for everyone. For some companion can be a simple friend acompanying them, and could include the horse they are sitting on. For others, it is a matter of what they find beautiful including potential sexual interest, i.e. depends on their sexuality.
- Hetrosexuals tend to protect the opposite gender.
- Homosexuals tend to protect their own gender.
- Pedosexuals tend to protect the children.
- Zoosexuals tend to protect animals.
Note: Sadists find beauty in the suffering of others, and love the sight of blood, abuse, killing, etc.