Samuel McKee was a model of "imbedded oversight" by the Congress of the Executive Branch in the early 19th century.
Then, during the summer recess, he enlisted as a private, serving on the staff of General William Henry Harrison at, among other places, the Battle of the Thames.
Family records indicate there was a long-running series of letters exchanged between the three on many of the most critical political issues of the day.
He was appointed by President Monroe as a member of the commission to clear the Ohio and Mississippi Rivers of obstructions and served until his death in Hickman County, Kentucky, on October 16, 1826.
McKee's brother-in-law was Robert Perkins Letcher (1788–1861) succeeded Robertson in the US Congress, and later served as the fifteenth Governor of Kentucky (1840–1844) and Ambassador to Mexico (1849–1852).