Friedrich I von Sommerschenburg Pfalzgraf von Sachsen

http://saebi.isgv.de/biografie/Friedrich_I.,_Pfalzgraf_von_Sachsen_(um_1060-1120)

http://fmg.ac/Projects/MedLands/SAXON%20NOBILITY.htm#_Toc359919034

ADALBERT [Sevecco] von Sommerschenburg, son of --- . m OUDA [Hilaria] von Goseck, daughter of FRIEDRICH [I] von Goseck Pfalzgraf in Sachsen & his wife Agnes von Weimar (-near Zorbau 1088, bur Goseck). The Chronicon Gozecense names "Oudam" daughter of "comes Fridericus [et] Agnam…de Wimare"[460]. ... Adalbert & his wife had one child:

• 1. FRIEDRICH [I] von Sommerschenburg (-[18 Oct 1120/1121]). He is named son of "Adalbertus Scucco" & his wife, sister of Pfalzgraf Friedrich, in the Annalista Saxo, which specifies that Friedrich succeeded his maternal uncle as Pfalzgraf[463]. Pfalzgraf in Sachsen 1097. The Chronicon Gozecense names "comes Fridericus palatini de Sumersenburch" as son of "Ouda"[464]. The Genealogica Wettinensis names "Fridericum comitem palatinum" as son of "Adelbertus quidam nobilis cognominatus Seveke de Sumerschenburc" & his wife Oda[465]. The documents dated Feb 1111 relating to the coronation of Heinrich V King of Germany as emperor name "Fridericum filium sororis suæ, marchionem Engilbertum, marchionem Thiebaldus, comitem Hermannum, Fridericum palatinum comitem de Saxonia, Berlingarium de Bavaria, Godefridum comitem, Fridericum Saxonum, Albertum cancellarium, Cononem fratri Berengarii, Sigebot de Bavaria, Henricum ducem Carinthie, Bertoldum filium ducis Bertoldi" as the emperor's guarantors[466]. "Fridericum palatinum comitem de Saxonia" signed fifth in the list of lay witnesses who swore for Heinrich V King of Germany at the time of his coronation as emperor in 1111[467]. Vogt of Kloster Schöningen 1120. m (after 1106) as her second husband, ADELHEID von Laufen, widow of ADOLF [I] von Hövel [Huwili] Graf von Berg, daughter of HEINRICH Graf von Laufen & his wife Ida von Werl. The Annalista Saxo names "Adelheidam", gives her parentage, her two husbands, her sons by her first husband and her son "palatinum comitem Fridericum iuniorem" by her second husband[468]. Pfalzgraf Friedrich [I] & his wife had two children:
  • a) FRIEDRICH [II] von Sommerschenburg (-19 May 1162, bur Marienthal). … m (divorced before 1144) as her first husband, LIUTGARD von Stade, daughter of RUDOLF I von Stade Markgraf der Nordmark & his wife Richgard von Sponheim (-murdered Winzenburg 30 Jan 1152). …Pfalzgraf Friedrich [II] & his wife had two children:
    • ...
  • b) ADELHEID von Sommerschenburg (-before 1180). …m GOSWIN [III] von Valkenburg und Heinsberg, son of GERHARD von Heinsberg und Valkenburg & his wife Oda von Walbeck (-18 Apr [1167/68]).