Statistics for occurrence #1 of “Duc de Chartres” in chapter 8 of Elias Nason, McClellan's Own Story: the war for the union, the soldiers who fought it, the civilians who directed it, and his relations to them.:

...d high credit in every way. Their uncle, the Prince de Joinville, who accompanied them as a Mentor, held no official position, but our relations were always confidential and most agreeable. The Duc de Chartres had received a military education at the military school at Turin; the Comte de Paris had only received instruction in military matters from his tutors. They had their separate establishment, being...
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