Thespiae?

[hoplite14gr]

Doreans origin is as dark as the "Dark Ages" (1100 -800 B.C.)
Thousands of suggestions were made bases both on Myth and Etymology.

Those of the Beotians who were Aeolic stock (Phlegyans) were the Orchomenians.
But you have a point suggesting Aeolic influence in Thespiae.

Beotians were first originated in Thessaly and when they migrated perhaps failed to dominate all the Lake Kopais settlements entirely.
That is a possible explanation for the later conflict of the Thebans with other Beotians.
Tribal loyalties were an issue but most scholars refuse to touch the "hot potato".

Kind regards