Also the New Testament books themselves provide evidence that Jesus was a historical person since they were written by different authors and were written during the first century as witnessed by historical persons such as:
Clement of Rome (A.D. 95) who quoted from: Matthew, Mark, Luke, Acts, 1 Corinthians, Titus, Hebrews, and 1 Peter The New Evidence That Demands A Verdict p. 44
Ignatius (A.D. 70-110) who quoted from: Matthew, John, Acts, Romans, 1Corinthians, Galatians, Ephesians, Philippians, Collossians, 1 and 2 Thessalonians, 1 and 2 Timothy, James, and 1 Peter The New Evidence That Demands A Verdict p. 44