Berthold III, Duke of Zähringen
Berthold III, Duke of Zähringen was Duke of Zähringen from 1111 until his death.
He was the son of Berthold II , the first holder of the ducal title.
Berthold III was a supporter of emperor Henry V and was significantly involved in the Concordat of Worms of 1122.
He was married to Sophia of Bavaria, a daughter of Henry IX, Duke of Bavaria.
He was killed on 3 December 1122 near Molsheim in the course of a feud, and was buried at St. Peter Abbey.
He died without male issue, and was succeeded by his brother, Conrad I
.
