such as the bands Clannad, The Pattersons, and Altan and solo artist Enya, have had international success with traditional or traditional flavoured music. Donegal music has also influenced people not originally from the county including folk and pop singers Paul Brady and Phil Coulter. Singer Daniel O'Donnell has become a popular ambassador for the county. Popular music is also common, the county's most acclaimed rock artist being the Ballyshannon-born Rory Gallagher. Other acts to come out of Donegal include folk-rock band Goats Don't Shave, Eurovision contestant Mickey Joe Harte and indie rock group The Revs. In more recent years, bands such as in Their Thousands and Mojo Gogo have featured on the front page of Hot Press magazine. County Donegal has a long literary tradition in both Irish and English. The Irish navvy-turned-novelist Patrick MacGill, author of many books about the experiences of Irish migrant itinerant labourers in Britain at around the start of the 20th century, such as The Rat Pit and the autobiographical Children of the Dead End, is from the Glenties area. The MacGill Summer School in Glenties is named in his honour and attracts national interest as a forum for the analysis of current affairs. The novelist and socialist politician Peadar O'Donnell hailed from The Rosses in west Donegal. The poet William Allingham was also from Ballyshannon. Modern exponents include the Inishowen playwright and poet Frank McGuinness and the playwright Brian Friel. Many of Friel's plays are set in the fictional Donegal town of Ballybeg. Authors in County Donegal have been creating works, like the Annals of the Four Masters, in Irish and Latin since the Early Middle Ages. The Irish philosopher John Toland was born in Inishowen in 1670. He was thought of as the original freethinker by George Berkeley. Toland was also instrumental in the spread of freemasonry throughout Continental Europe. In modern Irish, Donegal has produced a number of (sometimes controversial), authors such as the brothers Séamus Ó Grianna and Seosamh Mac Grianna from The Rosses and the contemporary (and controversial) Irish-language poet Cathal Ó Searcaigh from Gortahork in Cloughaneely, and where he is known to locals as ('Guru of the Hills'). County Donegal is known for its textiles, whose unique woollen blends are made of short threads with tiny bits of colour blended in for a heathered effect. Sometimes they are woven in a rustic herringbone format and other times in more