Mr. Jones was once a capable farmer, but after the aftermath of a very damaging lawsuit, deteriorated into drinking and became known for his harsh rule over the animals. Instigated by Old Major, the animals rebelled by driving out Mr. Jones, Mrs. Jones and his workers and removed him from power, supposedly ending the days of extreme hunger and labor. Often he was drunk, and forgot to feed the animals- or negelected too. He is later mentioned as deceased, having died in a care home elsewhere.
In the same way that the book's other characters are representative of historical figures, Jones is an allegory for Tsar Nicholas II, throughout the Russian Revolution.