OCCULTISTS from Poland

1. Józef Maria Hoene-Wroński (1776 - 1853)

With an HPI of 57.35, Józef Maria Hoene-Wroński is the most famous Polish Occultist.  His biography has been translated into 28 different languages on wikipedia.

Józef Maria Hoene-Wroński (Polish: [ˈjuzɛf ˈxɛnɛ ˈvrɔj̃skʲi]; French: Josef Hoëné-Wronski [ʒɔzɛf ɔɛne vʁɔ̃ski]; 23 August 1776 – 9 August 1853) was a Polish messianist philosopher, mathematician, physicist, inventor, lawyer, occultist and economist. He was born as Hoëné to a municipal architect in 1776 but changed his name in 1815 to Józef Wroński. Later in life he changed his name to Józef Maria Hoene-Wroński, without using his family's original French spelling Hoëné. At no point in his life, neither in Polish or French, was he known as Hoëné-Wroński; nor was the common French transliteration, Josef Hoëné-Wronski, ever his official name in his native Poland (though it might have served as his chosen French nom de plume on some work). In 1803, Wroński joined the Marseille Observatory but was forced to leave the observatory after his theories were dismissed as grandiose rubbish. In mathematics, Wroński introduced a novel series expansion for a function in response to Joseph Louis Lagrange's use of infinite series. The coefficients in Wroński's new series form the Wronskian, a determinant Thomas Muir named in 1882.