Lewis and Harris MacLeod, and those on Lewis being referred to as from the clan MacLeod of Lewis. Lewis is also the ancestral home of Clan Morrison. The Lewis chessmen is a famous collection of 12th-century chess pieces, carved from walrus ivory and mostly in the form of human figures, which were discovered in Uig in 1831. A major industry on the island is the production of Harris tweed fabric, which is handmade on the island; by law only fabric produced in the Outer Hebrides can be called Harris tweed. The Lewis Trilogy of novels ("The Blackhouse", "The Lewis Man" and "The Chessmen")
County Donegal of varied colors. These weaves are known as donegal tweeds (with a small 'd') and are world renowned. Although approximately 85% of its population is Roman Catholic, County Donegal also has a sizeable minority of Ulster Protestants. Many Donegal Protestants trace their ancestors to settlers who arrived during the Plantation of Ulster in the early 17th century. The Church of Ireland is the largest Protestant denomination but is closely rivalled by a large number of Presbyterians. The areas of Donegal with the highest percentage of Protestants are The Laggan area of East Donegal around Raphoe, the Finn Valley and areas