Jacob, could very well be the name of more than one episode, character or portrayer.
The following is a list that might contain the name of the episode, character or portrayer that you're looking for.
Click on one of the links listed below or search them to find their pages. If the character or page you were looking for if it is not listed and If this internal link link led you here, you may wish to change the link to point directly to the intended page.
Here is a list for portrayers and character that go by the name Jacob.