An attorney in fact is one who has authority given him to act in the place and stead of him by whom he is delegated. Bacon's Abr. All persons who are capable of acting for themselves, and even those who are disqualified from acting in their own capacity, if they have sufficient understanding, as infants of a proper age, and femes covert, may act as attorneys for others. Bouvier's Law Dic.

Where two persons are appointed with equal authority to act for a principal, the right is not exclusive in either, but any act done by either, within the scope of his authority, will conclude the other. Cushman v. Glover, 11 I11. 600; Glenn v. Davidson, 37 Md. 365.