Summons; to Whom Directed

The summons must contain a description of the property sought to be partitioned, and must be directed to all of the persons named as defendants in the complaint, and when it shows that some person, whose name is unknown to the plaintiff, has or claims an interest in, or lien upon, the property, the summons must also be directed to all persons unknown who have or claim any interest in, or lien upon, the property.