Wegener refers to Graf Berthold, son of Graf Ulrich, transferring his bondsman Rihgart on his deathbed into the hands of his son Graf Thiemo by charter dated [1000/05]. According to the 14th century Genealogia comitum Neuburgensium sive Formbacensium, "Udalricus senex comes genuit sex filios Arnoldum, Piligrimum, Brunonem, Tyemonem, Chounradum clericum Salzburgensem prepositum, Meginhardum", but this appears to be inaccurate. The Vita Wirntonis names "Eckebertus comes, avo suo Thymone". "Heinricus…rex" restored property "villam Flinsbach dictam in pago Sueinihgouui sitam et in comitatu Tiemonis comitis" to Kloster Niederaltach by charter dated 5 Nov 1005.
Graf im Schweinachgau. "Heinricus…rex" granted market and customs rights at "villa Helmgerisperk…in comitatu Thiemonis" to Kloster Niederaltach by charter dated 7 Jun 1009.
Graf in Reichenhall. Graf im Salzburggau 1007. "Chunigundæ imperatricis augustæ" donated property to the church of Freising by charter dated 1025, witnessed by "…Tiemo comes…Heinrih filius Tiemonis comitis…". "Heinricus…Romanorum imperator augustus" confirmed market and customs rights "in villa Helmgerisberk…in comitatu Theimonis" to Kloster Niedaltaich by charter dated 19 Feb 1049. The Codex Traditionum of Formbach monastery records that "domna Hymildrud...matrona" appointed “Tiemonem comitem in advocatum sibi” in respect of “villam...Cheminata...” and that later “Eckebertus comes quarto loco a prenominato avo suo Thymone” became adviser. The Codex Traditionum of Formbach monastery records that "bone memorie Odalricus de Windeperge frater domni Herimanni" donated “partem ecclesie sancti Martini” as “Thiemo avus suus” had exchanged with Egilbert Bishop of Passau (who had permitted the burial of “comes Thiemo” in the church), with the consent of “fratrueles Ekkeberti Dietricus et Gebehardus”. Wegener dates this exchange of property to [1045/50].
The necrology of the Niedermünster at Regensburg records the death "Non Mar" of "Diemar com".
The name of Thiemo's wife is not known. 1
Research Notes: