Martin Persson Nilsson
Mycenaean is the name given to the culture of ancient Greece (excluding Crete) during the Late Bronze Age (1500–1100 BC). They were also called Achaeans. The controversial writer Felice Vinci maintains that a Northern European tribe was referred to as Achaeans by Homer and that they migrated south and founded the Mycenaean civilisation. However, it was Martin Persson Nilsson (1874-1967), a Swedish historian, who was an earlier proponent of a Nordic origin for the Mycenaeans.
However, recent genetic studies suggest that the mainland Mycenaeans and the Cretan Minoans share a common ancestry with Neolithic populations of what are today Turkey and Greece(c).
Austen Atkinson in his Impact Earth suggested the possibility that the unexplained ending of the Mycenaean civilisation could be explained as a consequence of Earth’s encounter with Phaëton referred to by Plato (Tim.22c-d).
However, there are current studies(a) being made into the possibility that earthquakes were responsible for the demise of the Mycenaeans and the start of the Greek ‘Dark Ages’.
However, the earthquake theory is also under attack(b), with the proposal that either an uprising or invasion was responsible for the demise of the Mycenaean Greece.