Edward Coles, the second governor of Illinois, is largely forgotten today, which is a pity. His actions in 1824 helped lead to Union victory in the Civil War.
Illinois came into the Union as a free state in 1818. However, a majority of settlers in Illinois initially came from the South and some of them brought slaves, illegally, into the Sucker State. In 1822 Edward Coles, a 36 year old native of Virginia who had settled in Illinois in 1818, was elected Governor. Coles came from a slave-holding family, but he had long been convinced that slavery was morally wrong. When he arrived in Illinois he freed his ten slaves and deeded to each head of a family 160 acres of land to help give them a new start in a free state. He ran for governor because he was alarmed with the growing strength of pro-slavery forces in his new home state. In a tight four way race he won.
As Governor, Coles fought against laws in Illinois that discriminated against blacks and against indenture laws that attempted to establish black slavery in Illinois under another name. In 1823 pro-slavery forces had a call for a constitutional convention put on the ballot in 1824. Had a convention been called, there is little doubt that Illinois would have been transformed into a slave state. Working feverishly, Coles and his allies narrowly defeated the call for a constitutional convention at the ballot box in 1824 and Illinois remained a free state. Had the Civil War begun with an Illinois that had been part of the Confederacy, or, more likely, split in two as Missouri was throughout the war between rival Union and Confederate camps, it is hard for me to see a Union victory. Illinois contributed a quarter of a million men to the Union cause, and without those men the war in the West could never have been won.