William

- http://fmg.ac/Projects/MedLands/SICILY.htm

GUILLAUME di Lecce ([1138/39]-[1167/68]).  Hugo Falcandus records that "Tancred and William, the sons of Duke Roger by a nobly born mother…were kept under arrest within the palace compound" after the conspiracy against Guillaume I King of Sicily in [1156][517].  Guillaume was presumably later released as Hugo Falcandus also records that he visited his brother "imprisoned within the palace walls" at the time of the conspiracy against the king (in 1161), stating that Guillaume was then 22 years old[518].