Various, Encyclopaedia Britannica, 11th Edition…
“ The determination of Ferdinand to partition Hungary rather than drive the Turks out, which he might easily have done after Suleiman’s unsuccessful attempts on Vienna in 1529-1530, led to a prolongation of the struggle till the 24th of February 1538, when, by the secret peace of Nagyvárad,28 Hungary was divided between the two competitors. By this treaty Ferdinand retained Croatia-Slavonia and the five western counties with Pressburg and Esztergom (Gran) , while Zapolya kept the remaining two-thirds with the royal title. He was indeed the last national king of Hungary till modern times. ”
