The Illinois Oath of Guardian is a legal document that must be signed by a guardian when they are appointed by the court. The oath is a solemn declaration that the guardian will faithfully and honestly perform their duties according to the law, and will always act in the best interests of the ward. The oath is signed in front of a notary public or court clerk. There are two types of Illinois Oath of Guardian: Minor Guardianship Oath and Adult Guardianship Oath. The Minor Guardianship Oath is used when a guardian is appointed to care for a minor under the age of 18. The Adult Guardianship Oath is used when a guardian is appointed to care for an adult who is unable to make their own decisions. Both Oaths require the guardian to swear to obey the laws of the state of Illinois, to act in the best interests of the ward, and to faithfully discharge their duties as guardian.