William TROUSDALE was born in Orange County, North Carolina, September 23, 1790. In 1796 his father, Capt. James TROUSDALE, moved to Tennessee, and settled on a grant of 650 acres of land on which the town of Gallatin was afterwards located. He was educated in the common schools of the county. In 1813 he volunteered for the Creek war, and was elected Third Lieutenant. Took part in the battles of Talladega and Tallahatchie. Re-enlisted in 1814, and was at the capture of Pensacola, and in the battle of New Orleans, under JACKSON. After the close of the war he returned home and resumed his studies. Admitted to the bar in 1820. In 1827 married Miss Mary Ann BUGG. In 1835 he was elected to the State Senate. In 1836 he was made Major General of the Militia. He was Colonel of the Second Regiment of Mounted Volunteers in the Seminole War, in 1836. After the close of the war he declined to accept the appointment as Brigadier General in the Regular Army, tendered by President JACKSON. He was a Democratic elector in 1840. In 1847 he was appointed by President POLK, Colonel of the Fourteenth United States Infantry, and as such participated in the battles of Contreras, Cherebusco, Molina del Rey and Chepultepee, in the war with Mexico. In this last battle he commanded a brigade. He was twice wounded, but refused to leave the field. On August 23, 1848, he was made Brigadier General by brevet. In 1849 he was elected Governor of Tennessee, and served two terms. In May, 1853, President PIERCE appointed him Minister to Brazil, which office he held four years. Died in Gallatin, March 27, 1872, leaving many descendants.