Twelfth President of the United States, born in Orange County, Virginia; obtained a lieutenancy in the navy in 1808; first saw service in Indian wars on the north-west frontier; in 1836 cleared the Indians from Florida and won the brevet of brigadier-general; great victories over the Mexicans on the Texan frontier during 1845-48 raised his popularity to such a pitch that on his return he was carried triumphantly into the Presidency; the burning questions of his brief term of office were the proposed admission of California as a free State and the extension of slavery into the newly-acquired territory; was a man of strong character, a daring and skilful general, of unassuming manners, and loved by the mass of the people, to whom he was known as "Old Rough and Ready" (1784-1850).