On 22 Mar 1992, Tanna Togstad, age 23, & Timothy Mumbrue, age 35, were found stabbed to death at Mumbrue's rural farmhouse in Weyauwega, Waupaca County, Wisconsin. DNA evidence was found at the crime scene but has not been matched to anyone in the database to date. Mumbrue was stabbed a minimum of seven times. Togstad was raped and stabbed twice. Their dog was also killed. Togstad was unmarried. Mumbrue was going through a divorce at the time of the murders. Glendon Gouker, of Prague, Oklahoma, was named as a person of interest in the stabbings. Gouker stated to law enforcement that he drove a former Wisconsin employer to the farmhouse and waited in the car while the former employer went in and stabbed the two victims to death. The former employer currently runs a rodeo equipment store in Amherst, Wisconsin. That business was the target of two search warrants in 2013 related to the murders. Tanna Togstad was a rodeo rider. Gouker was recently convicted to life without parole in Oklahoma for rape and murder and in Wisconsin for rape. His sister/wife, Michele Gouker, who was involved in the rape and murder in Oklahoma, was also convicted.