There may have been a person that Christianity was based on, or even someone taken from older religions. But it does seem strange that a person as remarkable as he. Wasn't very well thought of, or talked about.
Here is a list of historians who may have mentioned Christians or even a person known as Christ. None of them provide any evidence for a historical or biblical Jesus.
PLINY the Younger (c.112CE)
IGNATIUS (107CE? 130-170CE?)
THALLUS (date unknown)
GALEN (late 2nd C.)
NUMENIUS (2nd C.?)
and the TALMUD (3rd C. and later)
Below is a list of other writers (apart from the ones in the above) who were around at the time of Jesus, that wrote nothing whatsoever about him.
Some even walked the same paths, but heard and wrote nothing.
Philo Judaeus (20 BC-50 AD)
Valerius Maximus (fl. c. 20 AD).
This next list is from historical writers from shortly after Jesus' time. none of which even mention a Jesus not even as an aside.
Lucius Annaeus Seneca (4 BC?-65 AD)
C. Musonius Rufus
Aulus Persius Flaccus
Marcus Annaeus Lucanus
Hero(n) of Alexandria
Plutarch of Chaeronea
Justus of Tiberias
Photius, Patriarch of Constantinople
Pliny the Elder (Gaius Plinius Secundus)
Dio Chrysostom (Cocceianus Dio)
Marcus Fabius Quintilianus .
Publius Papinius Statius
And here is a random list of some others you may want to look up.
None wrote anything regarding a Jesus.
Aulus Perseus (60 AD)
Columella (1 st. cent. AD)
Dio Chrysostom (c. 40-c. 112 AD)
Justus of Tiberious (c. 80 AD)
Livy (59 BC-17 AD)
Lucanus (fl. 63 AD)
Lucius Flours (1st-2nd -cent. AD)
Petronius (d. 66 AD)
Phaedrus (c. 15 BC-c. 50 AD)
Phlegon (1st cent. AD)
Pliny the Elder (23?-69 AD)
Plutarch (c.46-c. 119 AD)
Pomponius Mela (40 AD)
Rufus Curtius (1st cent. AD)
Quintilian (c. 35-c. 100 AD)
Quintus Curtius (1st cent. AD)
Silius Italicus (.25-101 AD)
Statius Caelicius (1st cent. AD)
Theon of Smyrna (c. 70-c.135 AD)http://www.earlychristianwritings.com/