Roger I, also known as Roger Bosso (c. 1031-1101) was a Norman knight and adventurer best known for conquering The Emirate of Sicily during the 11th century. His lifelong efforts helped lay the foundations of a wealthy new Mediterranean state based in Palermo, known as the Kingdom of Sicily founded in 1130.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Roger_I_of_Sicily/.