Who was in Jacob’s Cabin?

After watching the premier episode for Season 4 of Lost, The Beginning of the End, I was left with a few questions. Not surprising I guess since they have been doing that to me for 3 seasons now.

My biggest question was, “Who was in Jacob’s Cabin”.

The scene in question has Hurley getting lost in the jungle and he stumbles upon Jacob’s cabin. Seeing a light on through a window Hurley thinks, “Hmm…why don’t I go up there and peek in the window?”. Probably not a good choice on his part but if he didn’t how would we know.

As Hurley scans the room through his peep hole into the dimly lit cabin, he sees a picture of a dog hanging on the wall and then almost a silhouette of a person in a rocking chair.

I have been pausing my DVR trying to look for clues and the best I could figure is that it looked like Jack’s dad. I dug around on some fan sites and found this photo which helped me confirm my suspicions. But, this photo contradicts another photo from the episode where John Locke is introduced to Jacob by Ben. In this second photo, Jacob (if that’s who it is) seems to have a colonial style hairdo.

So far I have found nothing to tell me who the other person was that peeked back through the window and scared the crap out of Hurley.