Jacob Keaton is the father of Steven Keaton, the father-in-law of Elyse Keaton, and the paternal grandfather of Alex, Mallory, Jennifer, and Andrew Keaton. Jacob has two sons, Rob and Steven . Jacob is very different from his son Steven, and this causes confrontation during the time he is alive in the series. He is a hunter, fisher, and Republican and a conservative. He is very fond of his grandson, Alex, and the two spend time together when he comes to visit. In season 1, he makes a visit, and reveals that he is ill and is going to die.

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