That pushes the Trojan war back further.
Regarding the timing of Icelandic Volcanic eruptions and events elsewhere in Europe, we have Hekla being in the TOP TEN worldwide, which is not usually a big deal since most folks are able to get out of the way quite readily.
On the other hand all the Icelandic volcanoes spew fluorides ~ and that is a really special problem since a modest amount can kill people like Black Flag scragging ants, and Iceland has 130 volcanoes. One piece at Wiki said that "over the past 500 years, Iceland's volcanoes have erupted a third of the total global lava output."
While looking through the list of the largest eruptions to see if there were lists of the minor eruptions (with lots of fluoriodes) I encountered an analysis that says SANTORINI is overdue for another trick. The various timelines prepared for it suggest it had what amounts to a 200 year long period of recurring eruptions, so whatever the Greeks were doing elsewhere in the Eastern Mediterranean, or even in Bulgaria, they had a real trip.
Just sitting there perking away with a minor eruption here, a minor eruption there, a lava flow, a spewing of fluorides hither and yon, and doing it over and over and over, we end up not needing for any particular eruption to do vast damage.
The most recent major event in Iceland that's probably related to serious disruption in Europe was a modest outburst of Hekla and the others some time in the 500s. That combined with a major blast hypothesized for Krakatoa, or Rabaul in 535 could very well have precipitated the European Dark Ages PLUS the apparent disappearance of the people known as the Picts.
No one imagines these volcanoes weren't blowing their tops in earlier ages and killing people worldwide.
Check out these Google sites for Cassiodorus, strange weather. I first became aware of this information from a book on boloid impact effects.