Agnes of Germany (1072 - September 24, 1143), was the daughter of Henry IV, Holy Roman Emperor and Bertha of Savoy. Her maternal grandparents were Otto, Count of Savoy, Aosta and Moriana and Adelaide, Marchioness of Turin and Susa. Agnes married firstly, in 1089, Frederick I, Duke of Swabia. They had several sons and daughters, amongst whom were Frederick II of Swabia (1090 - 1147) (the father of Frederick Barbarossa) and Conrad III of Germany (1093 - 1152). Wikipedia
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