Ludwig Ernst von Nicolay

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Louis Ernst Freiherr von Nicolay (Russian: Леонтий Павлович Николаи; 7 January 1820 in Copenhagen, Denmark – 2 February 1891 in the Grande Chartreuse, France)^{[citation needed]} was a Russian general during the Caucasian War. He converted to the Roman Catholicism taking a name Jean-Louis in the monastic life of the Carthusians.