I figured something like that. He seemed to resemble a mix between Trinimac and Talos. I think I like what they've done better.
From what little I know about him (I'm reading up on more), he is a war god like Talos (and Ysmir by extension, even if Ysmir is a Shezzarine) and Trinimac, so it fits.
The one book I just read would imply that Ebonarm is a god-ancestor of some kind. Perhaps Nordic? Even though worshiping god-ancestors is more of an elven thing.