PRATT, Thomas George, governor of Maryland, born in Georgetown, D. C., 18 February, 1804; died in Baltimore, Maryland, 9 November, 1869. He was educated in his native place, studied law, and in 1823 removed to Upper Marlborough, Maryland, where he engaged in practice. He was in the legislature in 1832-'5, and in 1837 was chosen president of the last executive council that was held under the state constitution of 1776. In 1838-'42 he was in the state senate, and in 1844 he was the Whig candidate for governor on a platform that opposed the repudiation of the state debt. He was successful after one of the fiercest political contests that was ever waged in Maryland, and during his term the finances of the state were placed on a solid basis. On the expiration of his service he practised his profession in Annapolis till 1849, when he was elected to the United States senate in place of Reverdy Johnson, who had resigned on being appointed attorney-general. He was re-elected, and held his seat from 14 January, 1850, till 3 March, 1857. During his term he became an intimate friend of Daniel Webster, and he often entertained Webster and Henry Clay at his home in Annapolis. Subsequently he removed to Baltimore. At the beginning of the civil war Governor Pratt was a strong advocate of secession, and was confined for a few weeks in Fort Monroe, Virginia He was a delegate to the National Democratic convention at Chicago in 1864, and to the Philadelphia Union convention of 1866.