Family:Frederick IV, Duke of Swabia and Gertrude of Bavaria (1)

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Parents: Conrad III of Germany and Gertrude von Sulzbach
Frederick IV _____, Duke of Swabia
b. 1145
d. 1167
Parents: Henry the Lion and Clementia
Gertrude _____, of Bavaria
b. Bet 1152 and 1155
d. 1197
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