Theophilus in Wikipedia

Theophilus is the name of a person or an honorary title to whom the Gospel of Luke and the Acts of the Apostles are addressed (Luke 1:3, Acts 1:1). Most scholars agree that both Luke and Acts were originally written in Koine Greek, and that "θεόφιλος" ("Theophilos"), as it appears therein, means friend of God[1] or (be)loved by God or loving God[2] in the Greek language. No one knows the true identity of Theophilos and there are several conjectures and traditions around an identity. In English Theophilos is also written "Theophilus", both a common name and an honorary title among the learned (academic) Romans and Jews of the era. Their life would coincide with the writing of Luke and the author of Acts, sometime between 60-110 AD, depending on which tradition one subscribes to...