Robert Baratheon

Robert Baratheon won the Iron Throne on a battlefield rather than through any birthright, leading a rebellion sparked by a stolen bride and fought, by his own reckoning, chiefly with a hammer and a grudge. He proved a superb war-leader and, by nearly every account including his own, an indifferent king, preferring the hunt and the tourney and his cups to the tedious business of actually governing a realm he had bled to win. Seventeen years on the throne left him deep in debt to the family he trusted least, married to a wife he never loved, and visibly relieved whenever an old friend arrived to shoulder the crown's actual work for him. A maester observes that few rebels have won a throne so decisively and then done so little, once seated on it, to deserve keeping it.