Knight of the Order

You belong to an order of knights who have sworn oaths to achieve a certain goal. The nature of this goal depends on the order you serve, but in your eye it is without question a vital and honorable endeavor. The world has a wide variety of knightly orders, all of which have a similar outlook concerning their actions and responsibilities.
Though the term "knight" conjures ideas of mounted, heavily armored warriors of noble blood, mostly knightly orders in the world don't restrict their membership to such individuals. The goals and philosophies of the order are more important than the gear and fighting style of its members, and so most of these orders aren't limited to fighting types, but are open to all sorts of folks who are willing to battle and die for the order's cause.
 

Features

Knightly Regard

You receive shelter and succor from members of your knightly order and those who are sympathetic to its aims. If your order is a religious one, you can gain aid from temples and other religious communities of your deity. Knights of civic orders can get help from the community--whether a lone settlement or a great nation--that they serve, and knights of philosophical orders can find help from those who share those ideals.
This help comes in the form of shelter and meals, and healing when appropriate, as well as occasionally risky assistance, such as a band of local citizens rallying to aid a sorely pressed knight in a fight, or those who support the order helping to smuggle a knight out of town when he or she is being hunted unjustly.

Suggested Characteristics

Use the tables for the soldier background in the Player's Handbook as the basis for your traits and motivations, modifying the entries when appropriate to suit your identity as a knight of your order.
Your bond almost always involves the order to which you belong (or at least key members of it), as it is highly unusual for a knight's ideal not to reflect the agenda, sentiment, or philosophy of one's order.