Theophilus ben Ananus
Theophilus was the High Priest in the Second Temple in Jerusalem from 37 to 41 CE according to Josephus's Antiquities of the Jews. He was a member of one of the wealthiest and most influential Jewish families in Iudaea Province during the 1st century. A growing but still uncommon belief points to High Priest Theophilus as the person to whom the Gospel of Luke is addressed, but Theophilus is a common enough name that there are many other possibilities for the addressee of Luke's Gospel and the Acts of the Apostles. In its favor is the fact that in Luke Theophilus is called by the title Most Excellent (kratiste), indicating he held a political office like high priest, the ethnarch under the Romans. In Acts 1:1 he does not have this honorific indicating that he no longer held an office of the Roman government. This provides an unusual identifier that eliminates other candidates for whom such a change in office was not effected.