"Gabriel Bethlen (Hungarian: Bethlen Gábor; 15 November 1580 – 25 November 1629) was Prince of Transylvania from 1613 to 1629 and Duke of Opole from 1622 ...
to 1625. He was also King-elect of Hungary from 1620 to 1621, but he never took control of the whole kingdom. Bethlen, supported by the Ottomans, led his Calvinist principality against the Habsburgs and their Catholic allies." - (en.wikipedia.org 12.11.2019)
