NELSON, Roger, soldier, born in Fredericktown, Maryland, in 1735; died there, 7 June, 1815. He was a brigadier-general of the Revolutionary army, and was severely wounded at Camden, where he was left for dead on the field. After the peace he studied law, was admitted to the bar in Frederick-town, Maryland, and attained to eminence. He was elected to congress in 1804, served till 1810, and from the latter date till his death was associate judge of the 5th judicial district of Maryland.--His son, John, lawyer, born in Fredericktown, Maryland, 1 June, 1791; died in Baltimore, Maryland, 8 January, 1860, was graduated at William and Mary in 1811, admitted to the bar in 1813, and began practice in his native town. He was elected to congress as a Democrat in 1820, served in 1821-'3, was United States minister to Naples in 1831-'2, and in 1843-'5 was attorney-general of the United States.