Throughout the early 1200s the Dukes of Mazovia made inroads into Prussia, but this only provoked counter-raids from the Prussians. A methodical military takeover of the area was needed, and the only armies which could take up such a challenge were the military orders, the most famous of which, the Templars and Hospitallers, had proved their efficacy in Palestine. The Bishop of Riga had, in 1202, formed the Knighthood of Christ, better known as the Sword Brothers, to help him conquer and evangel—ise the Latvians. With the approval of Duke Konrad of Mazovia, the Bishop of Prussia followed suit by founding Christ’s Knights of Dobrzyn as the regular army of the Polish ‘mission’ to Prussia. But this was too small to cope with the task.
A more radical solution was called for, and so, in 1226, Konrad of Mazovia took a step whose consequences for Poland and for Europe were to be incalculable. He invited the Teutonic Order of the Hospital of St Mary in Jerusalem, known as the Teutonic Knights, to establish a commandery at Chełmno and help him con—quer Prussia. The Teutonic Knights, founded at Acre in Palestine on the model of the Templars, were attracted by the idea of a mission nearer home. They thought they had found one in Hungary, where they were given the task of holding the Tatars at bay, but King Andrew II of Hungary grew wary of their ambitions and shortly expelled them.
They could see the advantages of the Polish offer, but this time the Grand Master Hermann von Salza was determined to guarantee their future. He obtained documents from the Emperor Frederick II and a bull from Pope Gregory IX authorising the order to conquer Prussia and thereafter to hold it in perpetuity as a papal fief. Before he realised what he had let himself in for, Konrad of Mazovia discovered that the lease he had granted the order on the territory of Chełmno had become a freehold.
Hermann von Salza, who still kept his sights on the Holy Land, originally saw the Prussian theatre of operations as a sideshow. He despatched a few knights there in 1229, and a further contingent took part in a crusade into Prussia in 1232-33, preached by the Dominicans, in which several Polish dukes, the margraves of Meissen and Brandenburg, the Duke of Austria and the King of Bohemia took part, along with hundreds of German knights. The order’s involvement grew when, in 1237, it took over the Sword Brothers. And it was encouraged to take a greater interest in the area by successive Popes, whose wish to see the conversion of the pagan Balts was complemented by a desire to bring as much of northern Russia as possible into the fold of the Roman Church.
This placed the order in a position to organise annual forays (
By 1283 most of Prussia had been conquered. Although it was settled by a considerable number of landless Polish and German knights, it was the Teutonic Order that ruled the province. It established a formidable stronghold at Marienburg, a number of castles throughout the territory and a port at Elbing (Elbląg) to carry trade from the province. It proved an efficient administrator, as monastic discipline precluded venality and its structure provided
Fig. 2 The division and reunification of Poland under the later Piasts
a degree of continuity which dynastic states (with their disputed successions, minorities and likelihood of feckless or incompetent rulers) lacked. The knights’ rule was relatively benign to begin with. They favoured voluntary over forced conversion of the autochton—ous population, and were pragmatic enough to use local pagans to fight alongside them when necessary. But repeated revolts and apostasies made them take a more jaundiced view with time, and the autochtones were gradually all but exterminated.
In the space of fifty years, the Prussian nuisance on the Mazovian border had been replaced by a well-ordered state. This did not in itself represent a threat to the Polish duchies. But it was one of a series of developments that would.