The name of EUGENIE DE GUERIN (1805-1848), the sister of Maurice, cannot be omitted from any notice of him. Her _Journals_ (1861, Eng. trans., 1865) and her _Lettres_ (1864, Eng. trans., 1865) indicated the possession of gifts of as rare an order as those of her brother, though of a somewhat different kind. In her case mysticism assumed a form more strictly religious, and she continued to mourn her brother's loss of his early Catholic faith. Five years older than he, she cherished a love for him which was blended with a somewhat motherly anxiety. After his death she began the collection and publication of the scattered fragments of his writings. She died, however, on the 31st of May 1848, before her task was completed. See the notices by George Sand and Sainte-Beuve referred to above; Sainte-Beuve, _Causeries du lundi_ (vol. xii.) and _Nouveaux Lundis_ (vol. iii.); G. Merlet, _Causeries sur les femmes et les livres_ (Paris, 1865); Selden, _L'Esprit des femmes de notre temps_ (Paris, 1864); Marelle, _Eugenie et Maurice de Guerin_ (Berlin, 1869); Harriet Parr, _M. and E. de Guerin, a monograph_ (London, 1870); and Matthew Arnold's essays on Maurice and Eugenie de Guerin, in his _Essays in Criticism_. GUERNIERI, or WERNER, a celebrated mercenary captain who lived about the middle of the 14th century. He was a member of the family of the dukes of Urslingen, and probably a descendant of the dukes of Spoleto. From 1340 to 1343 he was in the service of the citizens of Pisa, but afterwards he collected a troop of adventurers which he called the Great Company, and with which he plundered Tuscany and Lombardy. He then entered the service of Louis I. the Great, king of Hungary and Poland, whom he assisted to obtain possession of Naples; but when dismissed from this service his ravages became more terrible than ever, culminating in the dreadful sack of Anagni in 1358, shortly after which Guernieri disappeared from history. He is said to have worn a breastplate with the inscription, "The enemy of God, of pity and of mercy." GUERNSEY (Fr. _Guernesey_), one of the Channel Islands, belonging to Britain, the second in size and westernmost of the important members of the group. Its chief town, St Peter Port, on the east coast, is in 2 deg. 33' W., 49 deg. 27' N., 74 m. S. of Portland Bill on the English coast, and 30 m. from the nearest French coast to the east. The island, roughly triangular in form, is 9-1/4 m. long from N.E. to S.W. and has an extreme breadth of 5-1/4 m. and an area of 15,691 acres or 24.5 sq. m. Pop. (1901), 40,446, the density being thus 162 per sq. m.