What is a "Fiduciary" anyway? According to Pennsylvania's Probate, Estate and Fiduciary Code, a fiduciary "includes personal representatives, guardians, and trustees, whether domiciliary or ancillary, individual or corporate, or is subject to the jurisdiction of the orphans' court division" (20 Pa. Stat. and Cons. Stat. Ann. Section  102). Black's Law Dictionary refines this definition as "Someone who is required to act for the benefit of another person on all matters within the scope of their relationship; one who owes to another the duties of good faith, loyalty, due care, and disclosure or someone who must exercise a high standard of care in managing another's money or property," (Black's Law Dictionary 743 [10th ed. 2014]).