What is the name of a secret fraternal order knights?

It's impossible to give you a single "name" for a secret fraternal order of knights. That's because there are many, both historical and modern, and each has its own distinct name.

To help you find what you're looking for, can you tell me a little more about what you're interested in? For example:

* Historical Period: Are you interested in knights from the Middle Ages, the Renaissance, or a later time?

* Location: Are you interested in a specific country or region?

* Focus: Are you looking for a group focused on chivalry, religious beliefs, or something else entirely?

Once I know more about what you're seeking, I can give you more specific examples and suggestions.