Nada Klaić

She authored numerous works regarding revolts and social conflicts, which she collected in the book Social Turmoil and Revolts in Croatia in the 16th and 17th Centuries (1976). She described the role of specific nobles in the books The Last Dukes of Celje in the Lands of the Crown of St. Stephen (1982) and Medvedgrad and its Masters (1987).

She provided a comprehensive and original concept of the early medieval development of the Croatian lands in the book History of the Croats in the Early Middle Ages (1971), while she collected her writings about numerous problems of the later period in the book History of the Croats in the High Middle Ages (1976). Her posthumously published books are Medieval Bosnia: Political Status of Bosnian Rulers before the Coronation of Tvrtko in 1377 (1989) and History of the Croats in the Middle Ages (1990).

Much of her work is the analysis and publication of historical sources. Relying partly on the contributions of earlier historians, she analyzed the entire Croatian diplomatic material of the Early Middle Ages (Diplomatic Analysis of the Documents from the Age of Croatian Rulers of Croat Descent, 1965, 1966–67), questioning its authenticity. Along with the anonymous Split chronicle called Historia Salonitana maior (1967), Klaić published several sources translated from Latin for the needs of students (Sources for Croatian History before 1526, 1972).

She researched the period from the arrival of the Slavs (see Migration Period) until the 19th century. Under the early influence of M. Barada, Lj. Hauptmann, B. Grafenauer and J. Šidak, she contributed to the Croatian Medievalism by writing papers about social history. The book History of the Yugoslav Peoples II (1959) includes her comprehensive overview of the history of Croatia in the Early Modern Times, including elements of economic and social history.

From 1946, when she took her doctor's degree with the thesis Političko i društveno uređenje Slavonije za Arpadovića (Political and Social Organization of Slavonia under the Árpád dynasty), she spent several decades engaged in researching Croatian medieval history. Nada Klaić gathered the results of her extensive analytical investigations, published first in journals and proceedings, and monographs and surveys of Croatian history. She died in her home city of Zagreb.

Nada Klaić was born in Zagreb, the granddaughter of the historian Vjekoslav Klaić and sister of landscape architect Smiljan Klaić. She was a university professor and a prominent Croatian medievalist, graduated at the Faculty of Philosophy of the University of Zagreb, the same faculty where she was involved in teaching for 45 years. She started her teaching and scientific career at the Faculty's Department of History in 1943, to become a full professor of the Croatian medieval history in 1969. This position she held until her death in 1988.

Nada Klaić (21 July 1920 – 2 August 1988) was a Croatian historian. She was a Croatian medievalist of the 20th century. A substantial part of the work was devoted to criticism of medieval sources.