Board Thread:General Discussion/@comment-26443838-20150806161533/@comment-24674051-20150807190245

Also, Henry did not start looking for his mom until after he got the storybook. and the last few pages (that were destroyed by Emma in episode 2 or 3) showed the Baby being put into the wardrobe, and the baby blanket had her name on it. And since the blanket was with Emma when she was found (and she still has that blanket), she was probably given that name in the LWM by the child welfare services. Emma Doe is at least better than Baby Doe.

That explains how Henry would know her name. Not really too much suspensionof belief for that detail.

As for knowing where he was born, he would still have a birth certificate, and that would not have been destroyed (along with any records necessary to show that Henry was adopted). and generally the birth certificate indicates where a child is born. So there is enough with the Name and the Birth Certificate to reasonably find a match.