I noticed a couple of issues in my browsings:
In the page at: http://www.unrv.com/empire/timeline-4th-century.php
That is noted for 308 AD.
Among the several bishops named Eusebius in the fourth century the one known for being a historian was Eusebius of Caesarea (AKA Eusebius Pamphili). He didn't become a bishop until 313 or 314, and wasn't bishop in Rome.
It seems that the main significance of Eusebius of Rome involved the interference of Maxentius in church affairs. Conflicts within the church were causing disruptions so Marcellus was removed, and a few months later Eusebius of Rome was also removed. Henry Wace's
Dictionary of Christian Biography tells the story, which involved disagreements about reaccepting people who had denied Christianity during Diocletian's persecution.
In the page at: http://www.unrv.com/provinces/syria.php
I'm guessing that should say "constant strain", and then have a comment about how "The Assyrians under Tiglath-Pileser III overran Syria in the 8th century BC and were soon followed by the Babylonians under Nebuchadnezzar in the next century."
It was about 140 years later, so I'd suggest not just saying "a century later", though the influence of the Babylonians may have been felt before they arrived.