Debbie Dingell was 2 years old when her then future husband took office. When he died, she took his place. This goes along with the definition of an oligarchy.
I had to look it up but it turns out that seat goes back to 1933 when John Dingell’s father was elected. It’s more like a hereditary peerage.
Her father-in-law had the seat before her husband. 92 years of Dingells.