I had a nice chat with one of DH's cousins the other day, in which she wanted to verify a source for a marriage record. It seems she was browsing an Ancestry family tree and the tree she saw had some bad information on it. Not that I'm perfect, but cousin's relative was not born in Wisconsin, but in Buffalo, New York and I did have the parent correct.
Please, please, please be careful with those family trees. You don't know where the info came from, and more often than not, the only source for a family tree is a reference to someone else's tree.
Take the time, verify, even if it means duplicating someone else's work. After all, you do want the documentation that proves the relationship, event, etc.
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