much agitation. It was not an exception, though. All his speeches in the parliament and at county assemblies staunchly advocated the freedom and independence of Croatia, so they could be published only in Branislav, an illegal Illyrian magazine printed in Belgrade. On Kukuljević's urging, the parliament passed the decision to make Croatian the official language in 1847. He became the chief judge of Varaždin County in 1845. During the Revolutions of 1848, Kukuljević was among the radical democrats. Under his influence, the ban Josip Jelačić convened the Croatian Parliament on June 5, 1848, opposing the explicit imperial order. Kukuljević also initiated the Slavic Congress in Prague. But the revolutions were crushed; imperial oppression set in. Kukuljević was removed from politics and kept under police surveillance. In the 1850s, his outlook radically changed. The second period of his political activity was the complete opposite of his early anti-Austrian and freedom-loving sentiments. After he became the prefect of Zagreb County in 1861, he was loyal to Vienna, implementing policies targeted against Croatians and the South Slavs and hounding his former friends who remained faithful to their Illyrian ideals. After the Compromise of 1867, he was removed from political positions and retired. He was later again elected to the Sabor. He died in Tuhakovec Castle in Zagorje and was buried in Zagreb. Historian and cultural figure Despite the sharp turn in his later political career, the early patriotic and historical poems of Kukuljević had a major influence on the patriotic sentiments among the Croats. He founded the Society for Yugoslavian History, edited the magazine called Arhiv za Povjesnicu jugoslavensku (Archive for Yugoslavian History), and published valuable historical monographs. Kukuljević's efforts earned him the title of the "father of modern Croatian historiography". Kukuljević collected and published many source texts related to the history of Croatia. He wrote a lexicon with 800 artists' biographies. He is considered a pioneer of Croatian scientific bibliography. In 1850, Kukuljević took part in the Vienna Literary Agreement. Due to financial problems, Kukuljević was forced to sell his enormous library, numbering 12,000 volumes, which was acquired by the Croatian Academy of Arts and Sciences in Zagreb. One of manuscripts from his library is a tragedy, Skanderbeg, written on the basis of Andrija Kačić Miošić's work. Works Glasoviti Hrvati prošlih vjekova (Famous Croats of Ages Past) Slovnik umjetnikah jugoslavenskih od Ivana Kukuljevica Sakcinskoga Juran i Sofia ili Turci kod Siska: junačka