760 ILCS 65/1

(1) In this Act unless the context or subject matter otherwise requires:

"Fiduciary" includes a trustee under any trust, expressed, implied, resulting or constructive executor, administrator, guardian, conservator, curator, receiver, trustee in bankruptcy, assignee for the benefit of creditors, partner, agent, officer of a corporation, public or private, public officer, or any other person acting in a fiduciary capacity for any person, trust or estate.

"Person" includes a corporation, partnership, or other association, or two or more persons having a joint or common interest.

"Principal" includes any person to whom a fiduciary as such owes an obligation.

(2) A thing is done "in good faith" within the meaning of this Act, when it is in fact done honestly, whether it be done negligently or not.