Jakób Gieysztor was a Polish-Lithuanian nobleman and politician who participated in the January Uprising of 1863. Gieysztor was also an antiquarian, publicist, and one of the leaders of the Whites political group in Lithuania. He has published his memoirs of his participation in the uprising and the subsequent deportation to Siberia.
Jakob Jakobeus (1591–1645) was a Slovak writer, historian, and poet. He was the author of Tears, Sighs and Pleas of the Slovak Nation. This is said to be the first known defense of the Slovak nation.
Jakob Lorber was a Christian mystic and visionary from the Duchy of Styria, who promoted liberal Universalism. He referred to himself as "God's scribe". He wrote that on 15 March 1840 he began hearing an "inner voice" from the region of his heart and thereafter transcribed what it said. By the time of his death 24 years later he had written manuscripts equivalent to more than 10,000 pages in print.
Jakob Nielsen is a Danish web usability consultant, human–computer interaction researcher, and co-founder of Nielsen Norman Group. He was named the “guru of Web page usability” in 1998 by The New York Times and the “king of usability” by Internet Magazine.
