hi! direct responses to your specific questions are welcome, but meanwhile, you may be interested in some earlier related discussions

Why did the Normans go to Sicily?

• During the period of maximum Norman expansion (Normandy, England, Sicily, Antioch) could it be said that Norman power was "overstretched"? Were the Normans able to recruit and incorporate non-Normans?

• Why did Normans invade Sicily?

• thread in Why were the Normans so successful?

• Why did the normans go all the way to southern Italy to establish themsleves there?

• To what extent was the Norman conquest of Sicily in the 11th/12th century considered a crusade or Holy War?

Normans in Sicily

• Norman identity in Southern Italy and Sicily in the 12th century

• What was the relationship (if there was one) between the various Norman states of the 11-12th Centuries?

• During the period of maximum Norman expansion (Normandy, England, Sicily, Antioch) could it be said that Norman power was "overstretched"? Were the Normans able to recruit and incorporate non-Normans?

• How does the Norman conquest of southern Italy compare to the Norman invasion of Britain?

Queries for sources

• Recommended reading on Norman Sicily?

• How 'Viking' were the Normans?

• Normans in Southern Italy......

• Website for finding a source about the Norman kingdom of Sicily from 1070-1200 ish?