William Lowndes Yancey, American journalist and politician (b. 1813)
William Lowndes Yancey (August 10, 1814 – July 27, 1863) was a journalist, politician, orator, diplomat and an American leader of the Southern secession movement. A member of the group known as the Fire-Eaters, Yancey was one of the most-effective agitators for secession and rhetorical defenders of slavery. An early critic of John C. Calhoun at the time of the Nullification Crisis of 1832-33, Yancey began to identify with Calhoun and the struggle against the forces of the anti-slavery movement by the late 1830s. In 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 Seccession". 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.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.