Frederick I, Count of Zollern (nicknamed Maute; died before 1125[1]), was often cited as a powerful Swabian Count and supporter of the imperial party of Henry V, Holy Roman Emperor.
He most likely was the son of Burkhard I,[2]: XXIX and was married to Udilhild (or Udahild) of the House of Urach (died: 11. April, 1134),[2]: LXXXVII which house later became the Fürstenberg family. They had nine children;[2]: LXXXVII his eldest son was Frederick II.[1] A younger son was Burkhard,[1] who founded the Zollern-Hohenberg line[1] (which became extinct in 1486).
Frederick was the first reeve of the Swabian Alpirsbach Abbey,[2]: LXXXVIII which had been founded by Adalbert of Zollern (from the short-lived Zollern-Haigerloch line) and other lords.[2]: XXIX
The Zollern (later: Hohenzollern) dynasty based their rise to power on their loyalty to the ruling royal or imperial family. Frederick I served the Holy Roman Emperor Henry V, and was sent on a diplomatic mission to France. He also accompanied Henry V on his Italian expedition in 1110 and again in 1111, where Henry V intended to claim the imperial crown in Rome.[3] He is also mentioned as an advisor to Henry V in both 1111 and 1114, both times while the imperial party was in Strasbourg.[2]: XC
Family and children
Frederick I and Udilhild most likely had at least nine children:[2]: LXXXVII
Burkhard (died between 1150 and 1155),[2]: XLI also Burkhard II of Zollern-Hohenberg
Egino
Gotfried of Zimmern (most likely near Hechingen)[2]: XLII (died between 1156 and 1160), likely Count of Zollern sometime around 1155[2]: XLI
Ulrich (died 1135 by poisoning), who late in life became a monk, then abbot, at the Benedictine abbey in Reichenau, after supposedly having been involved in the murder of his predecessor[2]: LXXXVIII
Adalbert (or Albert), who became a monk in Zwiefalten[2]: XXXIII
