John Zápolya
On January 6, 1527, the Slavonian nobility distanced themselves from this election and nominated John Zápolya the rival claimant to the Hungarian throne instead. A civil war erupted, with Ferenc Batthyány leading the pro-Habsburg faction and Christoph Frankopan leading the pro-Zápolya faction. The Austrian option ultimately prevailed after Zápolya's death in 1540.