Of authors there be two sorts. The first simply so called; which I have before defined to be him, that owneth the action of another simply. The second is he that owneth an action or covenant of another conditionally; that is to say, he undertaketh to do it if the other doth it not at or before a certain time. And these authors conditional, are generally called “sureties,” in Latin, fidejussores , and sponsores ; and particularly for debt, praedes ; and for appearance before a judge, or magistrate, vades .