When the Lincoln family emigrated to Illinois in 1830, Native Americans still occupied significant portions of central and northern Illinois. Although the Illinois tribes had been decimated by a combination of inter-tribal warfare and settlers' encroachments, the Sac and Fox tribes, as well as Kickapoo, still roamed the prairies. Native American raiders had killed Abraham Lincoln's grandfather, also named Abraham, in Kentucky in 1786. In Illinois the same pattern of white settlement and Indian resistance now played out again, nearly fifty years later. Americans pushing into the Fox and Sac tribal heartland of northwestern Illinois sparked new tensions and, despite a generally low level of violence, lived in fear of Indian reprisals. These tensions would spark the Black Hawk War of 1832.