Wisconsin Statutes Probate (Ch. 851 to 882) § 878.01. Probate bonds

(1) Generally. All bonds required by order of the court or of the probate registrar shall be for such sum and with such sureties as the court or probate registrar directs, except if otherwise provided by law. The bonds shall be for the security and benefit of all persons interested and shall be taken to the judge of the court, except where they are required by law to be taken to the adverse party. A bond shall not be deemed sufficient unless it has been examined and approved by the judge, the register in probate or the probate registrar and the approval endorsed thereon in writing and signed by the person approving; but failure so to do shall not render the bond void.

(2) Sureties. When individuals act as sureties, each must be a resident of this state, and shall give satisfactory evidence as to his or her financial responsibility, and, when required, shall do so before the judge, or some other officer designated by the judge.