[jeffersondem]

John Tyler, 10th U.S. president, was a great American and the only president, or former president, buried under the flag of a foreign nation.

[OttawaFreeper]

That is at Hollywood Cemetery in Richmond, VA. I visited there last year and it is the same cemetery where two other Presidents James Monroe and also (of the Confederate States of America) Jefferson Davis are buried. During that trip, I got to also see gravesites of Washington, Jefferson, and Madison, so six presidential gravesites in total.