Ohloblyn traced his ancestry to the Novhorod-Siverskyi region of eastern Ukraine, which had formed an important part of the autonomous Ukrainian "Hetmanate" in the seventeenth and eighteenth centuries, and throughout his professional career as a historian retained a lively interest in this area and wrote frequently about it.

[2] In 1942 he worked as a director of Kyiv Museum-Archive of Transitional Period, whose exhibition compared life under Bolsheviks and under Germans.

In his writings on Ukrainian historiography, Ohloblyn took a moderate position, positively evaluating the work of his former opponent Mykhailo Hrushevsky, who had been severely criticisized by the generations of the 1930s and 1940s, including Doroshenko, for his ostensible undervaluing of the strivings of the Ukrainian Cossack elite for statehood and independence.

Ohloblyn tried to evaluate populist Ukrainian historians like Mykola Kostomarov, Volodymyr Antonovych, and Hrushevsky within the context of their own times rather than that of the next generations which had learned new lessons about the importance of statehood from their experiences during the revolution.

His students and admirers who have continued his work include Lubomyr Wynar, Orest Subtelny, and Zenon Kohut.