Category:William I of Sicily

**William I of Sicily**
	12th-century king of Sicily
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Name in native language	Guglielmo I il Malo;
Date of birth	1120; Palermo
Date of death	7 May 1166; Palermo
Manner of death	natural causes;
Cause of death	dysentery;
Place of burial	Palermo Cathedral; Cattedrale di Monreale; Tomb of William I of Sicily;
Country of citizenship	Kingdom of Sicily;
Occupation	sovereign;
Field of work	central government; politics;
Family	Hauteville family;
Father	Roger II of Sicily;
Mother	Elvira of Leon;
Sibling	Costanza I of Sicily; Tancred, Prince of Bari; Roger III, Duke of Apulia; Tancred, King of Sicily; Alfonso of Hauteville; Simon, Prince of Taranto;
Child	William II of Sicily; Roger IV, Duke of Apulia; Robert III, Prince of Capua; Henry, Prince of Capua; Matina di Sicilia;
Spouse	Margaret of Navarre (1150–);
Work location	Sicily;
Authority file
	Q367415; ISNI: 0000000387168879; VIAF cluster ID: 280058705, 4805166172278190800001; GND ID: 119430800; Library of Congress Authorities ID: n86143321; IdRef ID: 030871417; NL CR AUT ID: mzk20231186762; Nationale Thesaurus voor Auteursnamen ID: 158938208; National Library of Poland MMS ID: 9810621622105606; J9U entity ID: 987007270079305171
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English: William I (b. 1131 - d. May 7, 1166), called the Bad or the Wicked, was the second king of Sicily, ruling from his father's death in 1154 to his own. He was the fourth son of Roger II of Sicily and Elvira of Castile. His maternal grandparents were Alfonso VI of Castile and a concubine (perhaps wife) baptised Isabella, but born Zaida.

<nowiki>Guillermo I de Sicilia; I. Vilmos szicíliai király; Gilen I.a Siziliakoa; Guillem I de Sicília; Wilhelm I.; ویلیام اول سیسیلی; 古列尔莫一世; Vilhelm 1. af Sicilien; Wilhelm I al Siciliei; 古列爾莫一世; Vilhelm I av Sicilien; גוליילמו הראשון, מלך סיציליה; Guillelmus I (rex Siciliae); 古列爾莫一世; गुल्येलमो प्रथम; Vilhelm I Paha; Vilhelmo la 1-a de Sicilio; Vilém I. Sicilský; Guillén I de Secilia; Guillaume Ier de Sicile; Vilim I., kralj Sicilije; グリエルモ1世; 古列尔莫一世; ويليام الاول ملك صقليه; Gugghiermu I di Sicilia; Guilherme I da Sicília; William I of Sicily; I Vilyam; Willem I van Sicilië; Вилијам I Сицилијански; Вильгельм I Злой; Guillermo I ng Sicilia; Guilherme I da Sicília; 古列尔莫一世; Gugghiermu I dari Sisilia; Wilhelm I Zły; Guglielmo Iañ; 古列爾莫一世; Гулиелмо I; Guglielmo I di Sicilia; Вільгельм I Злий; I. Guglielmo; Guillerme I de Sicilia; ويليام الأول ملك صقلية; Γουλιέλμος Α΄ της Σικελίας; 古列尔莫一世; re di Sicilia (r. 1154-1166); দ্বাদশ শতাব্দীর সিসিলির রাজা; szicíliai király; король Сицилии; König von Sizilien; крал на Сицилия; Konge af Sicilien 1154–1166; rege al Siciliei; シチリア王国ノルマン朝の第2代国王 (1120-1166); kung av Sicilien 1154-1166; Siciliya Kralı; sicilský král; soeverein uit Koninkrijk Sicilië (1126-1166); Sisilian kuningas vuosina 1154–1166; 12th-century king of Sicily; roi normand de Sicile (1154-1166).; Βασιλέας της Σικελίας; Sicilya kralı; Guglielmo il Malo; Guglielmo I il Malo; Guglielmo I d'Altavilla, re di Sicilia; Guillaume le Mauvais; Gugghiermu I; Вильгельм I; Вильгельм I Сицилийский; Вильгельм Злой; Willem I van Sicilie; Guillerm I el Dolent; गुल्येलमो दुष्ट; Gugghermu lu Malu; Gugghiermu lu Malu; Gugghelmu I di Sicilia; 威廉一世; Guglielmo I il Malo; Guglielmo I di Sicilia, Re di Sicilia; Guillermo I el Malo; Вилхелм I Злия; Guillén I de Sicilia</nowiki>