Sybille de Hauteville, de Apulia

Robert "Guiscard" & his second wife had eleven children

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

9. SIBYLLE of Apulia . The Alexeiad records that Robert "Guiscard" married "the other [daughter] to Eubulus who was himself a count of great distinction" but does not name her[351]. The Chronicle of Alberic de Trois-Fontaines names "Sybilla" as wife of "comitis Ebali de Roceio" but does not give her origin[352]. "Duo fratres Ebolus et Andreas et uxores nostre Sibilla et Adelisa et cognatus noster Hugo comes de Domno Martino uxorque eius Rothaidis" donated property to the church of Ramerupt Sainte-Marie by charter dated 1082[353].

m (before 1082) EBLES [II] Comte de Roucy, son of HILDUIN [IV] Comte de Montdidier et de Roucy, Seigneur de Ramerupt & his wife Adelaide de Roucy (-May 1103).

PLZ source for born c.1037