THE DATE BEHIND THE NAME
Guillaume IX
Duke of Aquitaine and Gascony and Count of Poitou
Guillaume IX was born on October 28, 1071 and died on February 17, 1126, aged 54.
Born
October 28, 1071
Guillaume IX died aged 54.
Died: February 17, 1126
Source:
Synchronized from Wikidata on October 5, 2026.
Original calendar: Julian. Displayed date is Gregorian.
- Professions
- composer, troubadour, writer, poet, warrior
- Citizenship
- Duchy of Aquitaine
More about Guillaume IX
- Zodiac sign
- Scorpio
Family
- Mother
- Hildegarde of Burgundy
- Child
- Agnes of Aquitaine, Queen of Aragon
- Spouse
- Ermengarde of Anjou
- Child
- Raymond of Poitiers
- Sibling
- Agnes of Aquitaine, Queen of León and Castile
- Spouse
- Philippa, Countess of Toulouse
- Child
- William X, Duke of Aquitaine
- Sibling
- Agnes of Aquitaine, Queen of Aragon and Navarre
- Father
- William VIII, Duke of Aquitaine
All birth date sources
A source is P248 “stated in” or a non-Wikimedia reference URL. Import-only references do not qualify.
Synchronized from Wikidata on October 5, 2026. View Wikidata record
Questions people ask
How old was Guillaume IX when they died?
Guillaume IX died aged 54.
When is Guillaume IX’s birthday?
Guillaume IX’s recorded birthday is October 28.
When did Guillaume IX die?
Guillaume IX died on February 17, 1126.