Complex sentence: The earliest claim of a sexual relationship between Giraud and Byron comes from George Colman's poem "Don Leon", in which Byron is the principal character and Giraud is portrayed as his liberator from the sexual prejudices of Britain.
Split into simpler sentences: The earliest claim of a sexual relationship between Giraud and Byron comes from George Colman's poem, "Don Leon". The poem casts Byron as the character Don Leon and portrays Giraud as Byron's liberator from the sexual prejudices of Britain.