Duke Robert Guiscard of Apulia and Calabria

  General Notes:

a Norman adventurer conspicuous in the conquest of southern Italy and Sicily. Robert was from the noble Maison d'Hautville of the Hauteville family, he went on to become Count (1057-1059) and then Duke (1059-1085) of Apulia and Calabria after his half-brother Humphrey's death.
http://en.wikipedia.org/wiki/Robert_Guiscard

Robert married Sikelgaita, daughter of Prince Guaimar of Salerno IV and Gemma of Capua, in 1058. (Sikelgaita was born in 1040 and died on 16 Apr 1090.)