SOURCE NOTES: Schwennicke, Detlev, ed., Euroopaische Stammtafeln: Stammtafeln zur Geschichte der europaischen Staaten, New Series, Marburg: J.A. Stargardt, 1978-. SOURCE NOTES: date: (871) [Ref: ES II #1], parents: [Ref: ES II #1], father: [Ref: ES III #692] SOURCE NOTES: date: (22.III 928) [Ref: ES II #1, ES III #692]