Excerpts from Books and Wikipedia
"Expelled from the throne of the Protestant 'Glorious Revolution' of 1689, James II and his son James Edward languished in exile in France, their hopes of a restoration kept alive by the backing of high-placed, usually Catholic supporters--known as Jacobites--in Scotland and England. The accession of the unpopular and Hanoverian George I in 1714, gave them their chance. A rebellion was planned involving English and Scottish Jacobites. . . . Advancing into Catholic Lancashire, Jacobites attracted little support and got trapped in Preston." [Furtado: 1001 Days]