OMAGH (Irish, Oigh " Seat of the chiefs"), an ancient t., capital of the co. of Tyrone in Ireland, situated on the river Strule, distant 34 m. s. from Londonderry, and 110 m. n.n.w. from Dublin, with both which cities it is connected by railway. Omagh grew up around an abbey founded in the year 792, but is first heard of as a fortress of Art O'Nial in the end of the 15th e., about which time it was forced to stir• render to the English, although its possession long continued to alternate between Irish and English hands. It formed part of James I.'s " Plantation" grants, and was strongly garrisoned by Mountjoy. On its being evacuated by the troops of James II. in 1689, it was partially burned, and a second fire.in 1743 completed its destruction. But has it been well rebuilt, and is now a neat and prosperous town. Pop. '71. 3,724. Omagh contains a very handsome court-house, where the assizes for county Tyrone are held, several neat churches (Homan Catholic, Episcopal, and Presbyterian), a convent, several partially endowed and national schools, a district lunatic asylum, and the work-house of the Poor Law Union of which it is the center. There is also a barrack station—it being within
the Belfast military district. Its trade is chiefly in brown linens, corn, and agricultural produce.
011AHA, the chief city of the state of Nebraska, is an the right bank of the Missouri, opposite Council Bluffs, and 20 in. D. of the mouth of the Nebraska river. Besides the government offices, it has a large trade by the rivers, and across the prairies, and is the eastern terminus of the Union Pacific railway, and also of the Omaha and North-western, and the Omaha and South-western lines. Pop. in 1830, 1912; in 1870, 16,083.