Frederick VI, Duke of Swabia
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Frederick VI of Hohenstaufen (1167 – March 20 1191) was duke of Swabia from 1170 to his death at the siege of Acre. He was the third son of Frederick III Barbarossa and Beatrice, Countess of Burgundy and brother of Henry VI, Holy Roman Emperor. Frederick married a princess of Hungary but had no known descendents.
See also: Dukes of Swabia family tree
Preceded by: Frederick V | Duke of Swabia 1170–1191 | Succeeded by: Conrad II |