Dated events associated with this case. Each event is a shared record: the same event appears identically wherever it is relevant.
· Declaration
A short-lived, unrecognized Ingrian Finnish breakaway state on the Karelian Isthmus, ended by the Treaty of Tartu.
Significance here: The only period in which an Ingrian Finnish self-determination movement held de facto territorial control, before Finland and Soviet Russia settled the area's status by treaty.
· Other
Repeated waves of Soviet deportation and persecution reduced the Ingrian Finn population from roughly 150,000 to around 50,000 between the late 1920s and 1939, continuing through the 1940s.
Significance here: The central historical grievance underlying later Ingrian identity politics and the modern Free Ingria movement, though this bundle does not adjudicate the disputed "genocide" characterization.
· Other
A Saint Petersburg-based regionalist and separatist movement advocating autonomy or independence for the historical Ingria region.
Significance here: The main organized expression of Ingrian regionalist and separatist identity in the post-Soviet period, and a target of repeated Russian state action.
Dates show their real precision. Approximate or uncertain dates are labelled and never converted into an exact day.