Make certain you really research from the most recent and work your way to earlier events. For years, I assumed (incorrectly) that an uncle by marriage was only married one time–to my ancestor’s sister. Turns out she died young and he remarried shortly after her death and had the children with her instead of my aunt.
The problem was exacerbated by the fact that the first marriage took place after the 1880 census and no vital records were kept and both wives were dead by the 1900 census.
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