BAUDOUIN de Flandre

From Medlands:

http://fmg.ac/Projects/MedLands/FLANDERS,%20HAINAUT.htm#ThierryIdied1168B

(-before 1154).  The Genealogica Comitum Flandriæ Bertiniana names (in order) "Balduinum, Philippum, Matheum et Petrum" as the four sons of "comes Flandrie Theodericus [et] Sibillam", specifying that Baudouin "in pueritia mortuo"[400].  "Sibilla Flandrensium comitissa" donated property to Arras St Vaast naming "maritus meus comes Theodericus…cum filio nostro Balduino" dated 1148[401].