You can delete any family except Sample_Data.
The reason for keeping Sample_Data is so that you’ll always have something to practice with. You can make as many changes to Sample_Data as you like while you’re learning how to use XY Family Tree.
In fact, it is possible to delete it if you’re confident using the Windows file system. Just find that family group and delete it. If that doesn’t make sense to you it’s probably best not to attempt it.
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