RINGGOLD, Samuel, congressman, born in Chestertown, Kent County, Maryland. 15 January, 1770: died in Frederick county, Maryland, 18 October, 1829. He was educated by private tutors, served in the state senate for several years, was elected to congress as a Democrat in 1810 in place of Roger Nelson, resigned, served till 1815, was re-elected in 1816, and served till 1821. After his marriage with his first wife, Maria, daughter of Gem John Cadwalader, he settled on his estate in Washington county, where he built one of the handsomest residences in the state. His second wife, Elizabeth, was the daughter of Colonel Edward Lloyd, of Talbot county, Maryland--His son, Samuel, soldier, born in Washington county, Maryland, in 1800; died in Point Isabel, Texas, 11 May, 1846. He was graduated at the United States military academy in 1818, served for several years as aide-de-camp to General Winfield Scott, became 1st lieutenant in 1822, and was brevetted captain in 1882. He became captain in 1836, participated in the Florida war, and was brevetted major " for active and efficient conduct" during hostilities, He then organized a corps of flying artillery, and was mortally wounded at Pale Alto, the first battle of the Mexican war. He introduced flying artillery into this country, invented a saddle-tree, which was subsequently known as the McClelland saddle, and a rebounding hammer made of brass for exploding the fulminating primers for field-guns, that prevented the blowing away of the hammer.--Another son, Cadwalader, naval officer, born in Washington county, Maryland, 20 August, 1802; died in New York city, 29 April, 1867. He entered the navy as midshipman, 4 March, 1819, served in Commander Perter's "mosquito fleet" in the West Indies in 1823-'4 for the suppression of piracy, and was commissioned lieutenant, 17 May, 1828. In 1838 he was appointed to command the brig" Porpoise" in Lieutenant Charles Wilkes's exploring expedition, and participated in making the discovery of the Antarctic continent. In August, 1840, he took part in an attack on the natives of Suahib, Feejee islands, where two of the officers of the exploring expedition had been killed by cannibals. He assisted in the survey of Columbia river, Puget sound, the harbor of San Francisco and Sacramento river, and among the South sea islands. He returned to New York in June. 1842, by way of the Cape of Good Hope, after circumnavigating the globe, and collected valuable scientific information concerning the Pacific and Antarctic oceans. On 16 July, 1849, he was commissioned a commander. He was on special duty in California in 1849-'51, and in the bureau of construction at the navy department in 1852, and took command of the North Pacific exploring expedition, sailing in the "Vincennes," but feeble health compelled him to return home. In September, 1855, he was placed on the reserved list, and on 2 April, 1856, he was pro, noted to captain on the active list. He had special duty in Washington in 1859-'60. When the civil war began he was placed in command of the frigate "Sabine." He was commissioned commodore, 16 July, 1862, and placed on the retired list, 20 August, 1864. He was promoted to rear-admiral on the retired list, 25 July, 1866.--Their half-brother, George Hay, soldier, born in Hagerstown, Maryland, in 1814; died in San Francisco, California, 4 April, 1864, was graduated at the United States military academy in 1833, and became 2d lieutenant, 6th infantry, on 15 August, 1836. He resigned from the army in 1837 and engaged in farming. Ha was reappointed with the rank of additional paymaster in 1846, and became major on the staff, and paymaster in 1847. He served in the pay department during the Mexican war, became lieutenant-colonel and deputy pay-master-general in May, 1862, and was in charge of the paymasters of the Department of the Pacific from 1861 till his death. He was an accomplished scholar, draughtsman, and painter, and published "Fountain Rock, Amy Weir, and other Metrical Pastimes " (New York, 1860).