Mistress(es)

Biography

https://fmg.ac/Projects/MedLands/NORTHERN%20FRANCE.htm#IdaBoulogneM...

Comte Eustache II had three [illegitimate] children by unknown mistresses:

• 5. GUILLAUME. Murray[522] quotes a 14th century version of the Genealogica comitum Boloniensium which says that Eustache [II] Comte de Boulogne had four sons (in order) Guillaume, Godefroi, Baudouin and Eustache. If this is correct, it is surprising that earlier versions of the Genealogica, written nearer the time, would have ignored Guillaume. If the Guillaume in question had been an illegitimate son, it is also surprising that the source fails to name the other illegitimate sons, especially the more well-known Geoffrey.
• 6. GEOFFROY (-after 1100). His parentage is confirmed by an undated charter under which his grandson “Faramus filius Willielmi Boloniæ” confirmed donations to Okeburn Priory, Wiltshire by “Gaufridus filius comitis Eustacii de Bolonia avus meus, et Willielmus de Bolonia filius ipsius pater meus”[523]. - see below.
• 7. HUGUES. The primary source which confirms his parentage has not been identified.