Research Notes:

The Brunwilarensis Monasterii Fundatio names "Herenfridus comes palatinus, qui post Ezo nominatus est" as husband of "Mathilde filia Magni Ottonis", and in a later passage as son of "Hermanni comitis palatine…cognomente Pusillus".

Graf in Auelgau: Emperor Heinrich II donated property of "Willihelmus comes et Boppo frater eius in villa Winetre in pago Auelgouue in comitatu Ezzonis comitis" to Kloster St Petrus at Bonn by charter dated 25 Feb 1015.

Pfalzgraf. Graf im Bonngau: Emperor Heinrich II donated “curtem Moffendorp...in comitatu Ezzonis palatini comitis in pago...Punnegowe” to Aachen St. Maria by charter dated 24 Jul 1020. "Heinricus…Romanorum imperator augustus" renewed the privileges of Kloster Fulda by undated charter, placed in the compilation with other charters dated 1020, witnessed by "Godifridi ducis, Berinhardi ducis, Thiederici ducis, Welphonis comitis, Cunonis comitis, Kunrati comitis, Ottonis comitis, Adilbrahtis comitis, Bobonis comitis, Friderici comitis, Bezilini comitis, Ezonis comitis palatini", the order of witnesses presumably giving some idea of the relative importance of these nobles at the court of Emperor Heinrich II at the time. Piligrim Archbishop of Köln confirmed the donation of "allodium suum in Brunwilre" to the abbey of St Nicholas made by "Erenfridus comes palatinus […et frater eius comes Hecelinus]…cum coniuge sua domna Mathilde" by charter dated 10 Oct 1028. "Heinricus…Romanorum imperator augustus" confirmed the possessions of the church of Köln donated by "Erenfridus beate memoriæ comes palatinus [et] coniuge sua domina Mathilde abbatiam in Brunwilare" and "postea defunctis supra dictis principibus filii eorum Herimannus…Coloniensis…archiepiscopus nec non sorores eius domina Richeza Bolemiæ quondam regina ac Theophanu Asnidensis monasterii abbatissa" by charter dated 17 Jul 1051 which also names "Etzo comes palatinus…et frater eius comes Hezelinus".

The Annales Hildesheimenses record that "Hezo Palatinus comes" died after catching pox from his "concubina nomine Tiethburga". The Annales Brunwilarenses record the death in 1034 of "Erenfridus comes palatinus". ¹