Updated Feb 20, 2026
Details
Birthday
(Thursday)
Died
Birthplace
Nationality
Languages
Italian
Spouse
Margaret of Navarre (1150)
Children
5 children: Henry, Prince of Capua, Matina di Sicilia, Robert III, Prince of Capua, Roger IV, Duke of Apulia, William II of Sicily
Parents
Roger II of Sicily, Elvira of Leon
Zodiac Sign
♑ Capricorn
Chinese Zodiac
鼠 Rat
Name Origin
English < Proto-Germanic (*Wiljahelmaz)
Popularity
Tier C -- 2,911 Wikipedia views/month
DROPTHE_ GOSSIP
William I of Sicily: 12th-century king of Sicily.
Born in Palermo (died at age 46).
The name William means william is an English name whose origin is Germanic. Derived from Willahelm, its meaning results from the union of "wil", meaning "desire" or "will", and "helm", meaning "protection".
Biography
William I, called the Bad or the Wicked, was the second king of Sicily, ruling from his father's death in 1154 to his own in 1166. He was the fourth son of Roger II and Elvira of Castile.
Connections (14)
Child of
Roger II of Sicily
Sibling of
Costanza I of Sicily
Spouse of
Margaret of Navarre
Parent of
Matina di Sicilia
Parent of
Roger IV, Duke of Apulia
Parent of
Robert III, Prince of Capua
Parent of
Henry, Prince of Capua
Parent of
William II of Sicily
Child of
Elvira of Leon
Sibling of
Tancred, King of Sicily
Sibling of
Alfonso of Hauteville
Sibling of
Tancred, Prince of Bari
Sibling of
Simon, Prince of Taranto
Sibling of
Roger III, Duke of Apulia
Related People
Frequently Asked Questions
How old was William I of Sicily?
William I of Sicily was born on and passed away on at the age of 46.
Where was William I of Sicily born?
William I of Sicily was born in Palermo.
Where can I find more information about William I of Sicily?
You can find more about William I of Sicily on Wikidata. Their full profile and filmography is available on this page.
