How much do we know about the Second Apostolic Council of Jerusalem of 69 AD? How much do we know about the Second Apostolic Council of Jerusalem of 69 AD?

I just bumped into a source that claims that Irenaeus, Eusebius and Saint Clement of Rome all mentioned that council. Is it that meeting that took place when Paul came back to Jerusalem in the book of Acts 21:18:


  And the day following Paul went in with us unto James; and all the
  elders were present. (KJV)


or is it a council that took place much later? (I don't know the year when Paul returned to Jerusalem)

How much do we know about that council, what decisions were made?

Wikipedia has no article on the Second Apostolic Council of Jerusalem of 69 AD.
The end of Acts leaves us with Paul under house arrest, waiting to see Caesar, but he was later brought before Nero, who died in the year 68 AD, see Wikipedia. It is generally reckoned that Paul was executed by Nero, so Paul, also, would have departed this life on or before that same year.

So it would seem unlikely, or even impossible, that the incident in Acts 21:18 refers to 69 AD.