Board Thread:Character Discussion/@comment-5118208-20141108143108/@comment-25926288-20180304000224

Magic isn’t genetic. There’s a big chance you could but that also depends on the magic.

Emma’s magic isn’t run of the mill as it comes with the “Savior”ness attached. Henry did get a powerful heart and connected with the power light magic filled Author Quill. So, he may not be magical, but he has something.