First, I Goggled my grandfather's name and a blogger who had him living in Indiana or Michigan for his childhood and returning home as an adult, marrying, then disappearing. And they had another relative in the state mental hospital nearby. None of that is true, and I have my mother still alive to confirm that information is totally, absolutely false. But it makes for good reading, even if it besmirches my grandfather's name. It's posted on the internet.
Second, we went to the movie, "Philomena" yesterday and it was good, IMHO. It brought up a lot of questions about how adoptions were done in years past.
Third, I have a close friend in another area of the country who searched all her life for her family. Now that she has found them, she's not so sure about all the ramifications that come with finding them.
So just saying, be careful and be sure to get everything you can that can be officially documented. Have fun, but be careful, as Mom says!!