István Geleji Katona

István Geleji Katona (1589 – 1649) was court-chaplain to the Calvinist Prince of Transylvania Gabriel Bethlen and an important figure of the 17th-century Transylvanian Reformed Church. He was notable for polemic anti-Catholic literature and against Szekler Sabbatarians. He sought to formalise the Calvinist liturgy and sacred music, reducing its diversity.

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