Wyo. Stat. § 3-3-401: Appointment of ancillary or foreign guardians or conservators.

(a) When there is no conservatorship, nor any petition therefor pending in this state, a duly qualified foreign conservator or guardian of a nonresident ward may, upon application, be appointed conservator of the property of the person in this state. For good cause shown, the court may appoint a resident conservator to act jointly with a foreign conservator.

(b) When a resident ward has a nonresident guardian or conservator, the guardian or conservator shall:

(i) File a certified copy of the order establishing the guardianship or conservatorship;

(ii) Obtain an order from a Wyoming court appointing him an ancillary guardian or conservator of the ward for as long as the ward is a resident of this state and the person remains the duly appointed guardian or conservator in the other state.