Related Questions How Many Generations Are There in 1000 Years? In the case of a half-fourth cousin, you will share 1 out of 32 of these grandparents.
This means that you can have an awful lot of fourth cousins out there somewhere, and it's unlikely that you know any of them — most people don't grow up knowing any fourth cousins personally.
The more generations involved, the more complicated it becomes to research a family tree.
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