Ok, this is Henry from Kansas or should I say Uncle Henry, I also wonder if he doubles as the wizard of oz too. I kind of hope he is Emma’s new love too at least someone close to her age and perhaps in her Era.
If he’s the Uncle Henry from Oz then he’s not in her age range as we know that Dorothy (who is around 16) went to Oz 10 years before the Curse was cast, and then you have to add in the additional 28 years of frozen time for SB. Meaning that Uncle Henry would have been uncle to a 16 yr old for 46 years before S3B. Making him at least 50ish and probably closer to 60. Christopher Gorham couldn’t pass for 50 as they have him styled and make-uped right now.
EDIT
However, I cannot think of a reason why he can’t be the Wizard. We know form ONCEWL that Regina’s curse affected all lands–kept them all frozen for 28 years until Emma arrived in SB.
The only sticky point is how he got from OZ to NYC and how he met Emma. So far, Gorham hasn’t been seen on set since 312, which seems to indicate that he’s important for NYC Cursed! Emma and not normal Emma.