The founders of Landvarnarflokkurinn, who included Einar Benediktsson, Bjarni Jónsson and Jón Jensson, were the most radical fighters for Iceland's independence of that time.
Todi Jónsson | Ulrika Jonsson | Thomas Denver Jonsson | J. Erik Jonsson Central Library | J. Erik Jonsson | Bjarni Jónsson | Runer Jonsson | Lars Jonsson (bird artist) | Lars Jonsson | Kristinn Jónsson | Karl Jónsson | Kalli Bjarni | Jan-Åke Jonsson | Fredrik Jönsson | Björn Jónsson | Bjarni Tryggvason | Ásgrímur Jónsson |
Tarski's lecture at the 1950 International Congress of Mathematicians in Cambridge ushered in a new period in which model-theoretic aspects were developed, mainly by Tarski himself, as well as C.C. Chang, Leon Henkin, Bjarni Jónsson, Roger Lyndon, and others.