Gaius Sentius Saturninus
Sentius Saturninus, a novus homo, was descended from a senatorial family from Atina. His father was a senator who supported Sextus Pompey, serving as an envoy on his behalf to Marcus Antonius in Greece in 40 BC, but at some point he switched allegiance to Octavianus.
A military officer, Sentius Saturninus’ praetorian career is unknown. In 19 BC he was elected consul ordinarius alongside Quintus Lucretius Vespillo. During this year he was forced to intervene to prevent the candidature of the demagogue Egnatius Rufus, whom he imprisoned and then executed.
In around 14/13 BC, Sentius Saturninus was appointed the proconsular governor of Africa. Then from 9 BC – 7 BC Sentius Saturninus served as Legatus Augusti pro praetore (or imperial governor) of the Roman province of Syria. During his time as governor of Syria, he was caught up in the intrigues of the Herodian family. Following instructions from Augustus, he convened a council to be held at Berytus to rule on accusations of treason made by Herod the Great against his sons Aristobulus and Alexander. Sentius Saturninus suggested a ruling of mercy, supported by his staff which included Saturninus' three sons, who were his legates. However, the procurator voted against Herod's sons, to which the majority of the council agreed with, resulting in Herod’s sons being condemned and executed.
BIRTH OF JESUS DURING SATURNINUS'S APPOINTMENT AS PROPRAETORIAL IMPERIAL LEGATE OF SYRIA -- 9 to 6 BC. Tertullian (c.160 - 225AD), the Christian law expert from Carthage in North Africa, wrote (in Tertullian against Marcion, 4, 19) that Jesus was born while Saturninus was the governor of Syria. Some experts (see Daryn Graham, "Luke's Census and Dating the Birth of Christ" in 'Archaeological Diggings, Volume 20, #6-2013, Issue 119, December 2013-January 2014, Pp20-25) support this and have produced studies which suggest Jesus was probably born in 7BC. This fits with the astronomical calculations for the course of the star that led the Biblical Magi to Bethlehem. It was overhead in Judaea on 15 September 7 BC. This also fits with the date of Herod the Great's persecution of the children. Matthew (2.14) says this began within 2 years of Jesus's birth, which is why Herod ordered that all children under 2 years old were to be killed ... and this time-frame places the massacre of the children in 5 BC ... and as Matthew says, "... at that time Joseph and Mary took Jesus and departed into Egypt". Herod died a year later, shortly before Passover in 4 BC, allowing Mary & Joseph to return home to Nazareth from Egypt.
This all seems to constitute a strong argument that Jesus was indeed born in 7 BC, when Gaius Sentius Saturninus was Legate of Roman Syria. There was no Roman Procurator in Judaea at this time. Procuratorial rule came into force with the banishment of Herod's son, Archelaus; in the year 6 AD. Note that some experts such as Syme still disagree with this date, and favour a later date of 4 BC for the birth of Christ. This is, however, unlikely, especially considering the date of King Herod's death and the events which preceded it. 
After his posting in Syria, Sentius Saturninus may have taken up a military command in Germania after the departure of Tiberius in 7 BC. However, in AD 4, he certainly replaced Marcus Vicinius in Germania, and for the next two years served under the command of Tiberius. During this time he was awarded the ornamenta triumphalia. His final campaign in Germany was in AD 6, when he marched from Moguntiacum, and was meant to join up with Tiberius who was marching from Carnuntum, with the intent of crushing king Maroboduus and the Marcomanni. However, the Great Illyrian Revolt forced them to return, and Saturninus was replaced in Germania by Publius Quinctilius Varus.
Described as energetic and valorous by Marcus Velleius Paterculus, Sentius Saturninus was a member of the Quindecimviri sacris faciundis. He had three sons, two of whom reached the consulate: Gaius Sentius Saturninus (consul in AD 4) and Gnaeus Sentius Saturninus, consul in AD 5. His third son was Lucius Sentius Saturninus, who disappears from the historical record after his father’s governorship of Syria.
Publius Silius Nerva
|Consul of the Roman Empire
with Quintus Lucretius Vespillo
Marcus Vinicius (suffect)
- Broughton, T. Robert S., The Magistrates of the Roman Republic, Vol III (1986)
- Syme, Ronald, "The Augustan Aristocracy" (1986). Clarendon Press. Retrieved 2012-09-21 – via Questia (subscription required)
- Syme, pg. 44
- Broughton III, pg. 191
- Syme, pg. 393
- Syme, pg. 42
- Syme, pg. 45
- Syme, pg. 322
- Syme, pg. 340
- Syme, pg. 85
- Syme, pg. 325
- Syme, pg. 426