Reese Witherspoon, 36, attended a hearing on Friday in Nashville, Tennessee, alongside her husband, Jim Toth, to weigh in on the bigamy dispute between her parents — John Witherspoon and his wife of 42 years, Betty Witherspoon.

The case, which was closed to the public, involves John Witherspoon's marriage to another woman, Tricianne Taylor, on January 14, 2012. Reportedly, John was still married to Reese Witherspoon's mother, Betty, at the time, and still is, according to The Tennessean.

The lawsuit against John Witherspoon and Taylor accuses the two of bigamy and seeks to have the new marriage annulled on the grounds that "no person in Tennessee can marry another while being married at the same time of the second marriage," quotes People.

A pregnant Witherspoon and her brother were both present to reportedly ask Probate Judge Randy Kennedy, who handles cases of mental competency, to put their father under conservatorship. They and their mother, Betty, fear that John suffers from early onset dementia, reports The Tennessean. Betty Witherspoon has a restraining order against Taylor that prevents her from using the Witherspoon name.

According to People, John, 70, a physician, has had mental problems in the past that include alcohol abuse, hoarding, and compulsive spending.

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