 What is today Burgenland was in those times the Moson, Sopron and Vas counties of Hungary.In the 16-17th centuries German Protestant refugees arrived in Western Royal Hungary to shelter from the religious wars of the Holy Roman Empire, particularly from the suppression of the Reformation in Austrian territories, then ruled by the staunchly Roman Catholic Habsburgs.After the Habsburg military victory against the Ottomans at the end of the 17th century, the Habsburg Kingdom of Hungary was enlarged to include much of the territory of the former medieval Kingdom of Hungary.