It was established after Magyar nobleman Csanád (the eponymous founder) had defeated Ajtony, who had ruled over the region now known as Banat (in Romania and Serbia).
At urbs Morisena, which was given the name of Csanád, a Roman Catholic bishopric was immediately founded, headed by Gerard.
By that time Csanád had been baptized and become the head of the royal county (comitatus) organized around the fortress at Csanád.
[1][2] Since 1526, the county was controlled by the Eastern Hungarian Kingdom.
During the Ottoman campaign in 1551-1552, the county was conquered and its territory was incorporated into the newly formed Sanjak of Çanad, within the Temeşvar Eyalet.