[ or younger than his brother Guy.][, p. 283.] Romuald Guarna lists him before Guy.[.]
Robert accompanied his elder brother Roger Borsa in 1086, when the latter went to Palermo to confirm his possessions in the County of Sicily. He signed as a witness the document issued by Roger granting to the abbey of La Cava the monastery of the Holy Spirit in Bari.[ He is last recorded in Sicily in 1096.][
]
John Tuzson argues that Robert later moved to Hungary in the following of his cousin, Queen Felicia, the wife of King Coloman of Hungary.[ Felicia, unnamed, is described as "a lady of the highest nobility, daughter of King Robert Guiscard of Apulia" in the 14th-century Chronicon Pictum.][.] It is universally recognized that her father could not have been Robert Guiscard. It has generally been concluded that he was in fact Prince Robert I of Capua, but Tuzson argues that he was Count Roger I of Sicily, Robert Guiscard's brother.[ He connects the younger Robert Guiscard and the queen's entourage to the Hungarian kindred of Oliver and Ratold, which the Chronicon claims originated in Caserta.][.]
