In 1843, young Slovak Lutheran Protestants, led by Ľudovít Štúr, decided to establish and discuss the central Slovak dialect as the new Slovak language standard instead of both Bernolák's language used by the Catholics and the Czech language used by older Slovak Lutheran Protestants. The new standard was also accepted by some users of the Bernolák language led by Ján Hollý, but was initially criticized by the older Lutheran Protestants led by Ján Kollár (died 1852). This language formed the basis of the later literary Slovak language that is used today. It was officially declared the new language standard in August 1844. The first Slovak grammar of the new language will be published by Ľudovít Štúr in 1846.