Karol Kuzmány was a prominent Slovak Lutheran pastor, writer, and theologian in the Kingdom of Hungary, with a focus on philosophy and aesthetics. He studied at the University of Jena in Germany between 1928 and 1929. He returned to Slovakia after his education and became a chaplain in Banská Bystrica in 1830, later serving as a pastor there and in Zvolen. In 1849 he became professor of practical theology at the University of Vienna and began to publish works on theology. In 1860 he was elected superintendent, serving the Bratislava superintendency.
Karol Libelt was a Polish philosopher, writer, political and social activist, social worker and liberal, nationalist politician, and president of the Poznań Society of Friends of Learning.
Karol Miarka also called Elder or Father was a Polish social activist in Upper Silesia, teacher, writer, publicist and printer. Initiator of the establishment and organizer of many Polish social and economic organizations.
Karol Sidor was a Slovak nationalist politician and journalist. Active from an early age, he was undecided about full independence and as a result was largely sidelined during the Slovak Republic.
Karol Szajnocha (1818–1868) was a Polish writer, historian, and independence activist. Self-taught, he would nonetheless become a notable Polish historian of the partitions period.
Karolina Světlá was a Czech female author of the 19th century. She was associated with the literary May School. She married Professor Petr Mužák (1821–1892) in 1852, who had taught her music. She also had an affair with Jan Neruda. She introduced Eliška Krásnohorská to literature and feminism. She edited the magazine Ženské listy which was established by Krásnohorská in 1873.
Karsten Alnæs is a Norwegian author, historian, and journalist, who has dual degrees in history and literature from the University of Oslo. He worked as a journalist and taught at the Norwegian School of Journalism. His bibliography includes 15 novels, 3 children’s books, a collection of novellas, and a number of non–fiction works.