May 17 Guido van Arezzo, Italian music theorist, dies
Nov 01 Henry IV, German emperor (1056/84-1105) [or Nov 11].
Nov 01 Henry iv: German emperor (1056/84-1105) [or nov 11]
Nov 11 Henry iv: Holy roman emperor
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May 17 Guido van arezzo: Italian music theorist,
Important Dates And Events In History - Hisdates.Com