Wis. Stat. § 893.22: Limitation in case of death.

If a person entitled to bring an action dies before the expiration of the time limited for the commencement of the action and the cause of action survives, an action may be commenced by the person’s representatives after the expiration of that time and within one year from the person’s death. If a person against whom an action may be brought dies before the expiration of the time limited for the commencement of the action and the cause of action survives, an action may be commenced after the expiration of that time and within one year after the issuing, within this state, of letters testamentary or other letters authorizing the administration of the decedent’s estate.