Describe 3 of the traits that a courtier needed to possess according to the writings of castiglione

First we have to understand that a courtier is the King’s or Queen’s daily attendant or visitor. These people are trusted to do their jobs properly. The traits are they need according to the writings of Castiglione are as follow: 

decorum, or appropriate protocol behavior. 

extreme discretion 

trustworthiness and gracefulness 

My best answer is the haudenosaunnee or the iroquois.