William Lowndes Yancey (August 10, 1814 – July 27, 1863) was an American politician in the Antebellum South. As an influential “Fire-Eater”, he defended slavery and urged Southerners to secede from the Union in response to Northern antislavery agitation.
Though a critic of John C. Calhoun at the time of the Nullification Crisis of 1832–33, in the late 1830s, Yancey began to identify with Calhoun, and, by 1849, Yancey was a firm supporter of Calhoun’s “Southern Address” and an adamant opponent of the Compromise of 1850. Throughout the 1850s, Yancey demonstrated an ability to hold large audiences under his spell for hours at a time and was sometimes referred to as the “Orator of Secession”.[1] At the 1860 Democratic National Convention, he was instrumental in splitting the party into Northern and Southern factions as a leading opponent of Stephen A. Douglas and the concept of popular sovereignty. He used the phrase “squatter sovereignty” in a speech he gave at the convention to describe popular sovereignty.[2]
During the American Civil War, Yancey was appointed by Confederate President Jefferson Davis to head a diplomatic delegation to Europe in the attempt to secure formal recognition of Southern independence. In these efforts, Yancey was unsuccessful and frustrated. Upon his return to America in 1862, Yancey was elected to the Confederate States Senate, where he was a frequent critic of the Davis Administration. Suffering from ill health for much of his life, Yancey died during the Civil War, in July 1863 at the age of 48.
Source: Wikipedia