List of Famous people with last name Istria

Berthold III, a member of the Bavarian House of Andechs, was Margrave of Istria from 1173 until his death.

Henry II, Margrave of Istria, born c.1175 and died 18 July 1228 in Slovenj Gradec (Windischgraz), was a noble from the House of Andechs who ruled the March of Istria and Carniola from 1204 to 1228. He inherited the County of Stein, and expanded his domains to the Windic March through marriage. He died childless, and his vast possessions were eventually inherited by his niece Agnes of Merania.

Engelbert III, a member of the Rhenish Franconian House of Sponheim, was Margrave of Istria from 1124 until his death.

Hunfrid was the Margrave of Istria and, according to some sources, Duke of Friuli from 799 to c. 804, when a Duke John was ruling Istria. He was the founder of the family called the Hunfridings.