sentences:  On behalf of the remaining officers of the war, he headed an unsuccessful effort to lobby Congress to grant all veteran Revolutionary officers half-pay for life in 1818.Congress was to pass such a bill in 1826, fifty years after independence, but Jackson was not associated with it; his last public appearance was welcoming the Marquis de Lafayette to Philadelphia in 1824.He remained Secretary General of the Cincinnati until his death on December 18, 1828, at the age of 69, in Philadelphia.