From Familypedia

United Empire Loyalist (U.E.L.) (U.E.)

The Lord Dorchester in the proclamation of 1789 granted all descents, male and female, of persons who lived in colonial America prior to the Revolution and fought for the Royal Standard in the American Revolution, the right to use the initials U.E. after their name. U.E. stands for Unity of the Empire and is sometimes referred to as UEL or United Empire Loyalists which is an association of U.E. members.