It's entirely possible that the Sea People were remnants of the Minoan civilisation who suffered massive famine after the explosion of the volcano of Thera. It's likely that this was a dispersed civilisation around the coasts and islands of the Aegean and Eastern Mediterranean, all of which would have been disrupted to a greater extent by tsunami in the aftermath of the explosion.

This led to a collapse of the existing "Heroic" Greek civilisations of the middle bronze age. Several of these kingdoms appeared to have died out, Sparta probably being one of them. The later Spartans were supposedly arrivals from the Balkans who took on the mantle of the original but who were apparently unrelated to them.

But whatever the theories, however much there is interesting linkage in the fossil record, we lack anything like real proof.

keep to the Fen Causeway