Howard was an Episcopalian, and a Brother of a Baltimore lodge of Freemasonry.
His son, GeorgeHoward was born in Jennings House during his term as Governor; George eventually returned there as Governor himself forty years after his father's term, and four years after his death.
John Eager Howard is buried at the Old Saint Paul's Cemetery, in Baltimore, where in 1904, an equestrian statue of him by the eminent French sculptor Emmanuel Frémiet was erected.
George Thomas Howard, soldier, explorer, and businessman, was born in Washington, D.C., on September 2, 1814, the son of Samuel William and Mary (Tyler) Howard.
Howard was captured, marched to Mexico, and confined in prison at Puebla.
Although ill during the later stages of his life, Howard accepted a commission in the Confederate Army and was instrumental in supplying cattle for the Southern forces and negotiating cotton-exchange contracts with Mexican suppliers.