Mr. Jones had been a capable farmer once in his lifetime, but in the aftermath of a very damaging lawsuit, he had become quite disheartened with his lot in life and an alcoholic.
Instigated by Old Major who is 12, the animals rebel by driving out Mr. Jones, his wife and his workers, and removing him from power, supposedly ending the days of extreme hunger and hard labour.
In the second chapter, an exiled Jones lives at the Red Lion Inn, where he feels sorry for himself and commiserates with sympathetic and perplexed farmers (and more drinking).
The pigs and Moses obviously have no inclination to bring their former master up – they don't even mention Snowball, who was a scapegoat for a long number of years.
When the other major farmers decide to make an attempt to seize Animal Farm, Jones offers to join them but is turned down.