Donegal tweed manufactured for centuries it took on its modern form in the 1880s, largely due to the pioneering work of English philanthropist Alice Rowland Hart. While the weavers in County Donegal produce a number of different tweed fabrics, including herringbone and check patterns, the area is best known for a plain-weave cloth of differently-coloured warp and weft, with small pieces of yarn in various colours woven in at irregular intervals to produce a heathered effect. Such fabric is often labelled as "donegal" (with a lowercase "d") regardless of its provenance. Along with Harris Tweed manufactured in the Scottish Highlands, Donegal is
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