A Prussian officer, who served many years in the armies of the great Frederick; was one of his aids, and had held the rank of Lieutenant General. He arrived in New Hampshire from Marseilles in November 1777 with strong recommendations to Congress. He claimed no rank, and only requested permission to render, as a volunteer, what services he could to the American army. He was soon appointed to the office of inspector general with the rank of major general. He established a uniform system of manoeuvres and by his skill and persevering industry effected during the continuance of the troops at Vally-forge a most important improvement in all ranks of the army. He was a volunteer in the action at Monmouth, and commanded in the trenches of Yorktown on the day which concluded the struggle with Great Britain. He died at Steubenville, New York, November 28, 1794, aged 61 in consequence of his important services, he was rewarded by Congress with a pension of two thousand five hundred dollars per annum. [Pp. 16-17.]
Historical Catalogue of the Paintings in the Philadelphia Museum consisting chiefly of Portraits of Revolutionary Patriots and other distinguished characters. 1813.