Looking for Slacks around Kingfisher. William Slack moved to OK , with his family from Illinois, some time after 1824. Came from KY to IL about 1815. William m. Mary Finney d/o John and Sarah (Reynolds) Finney from IL & Virginia. There were 13 children. Part of the family resided in the Kingfisher area for many years. One of those being my ggrandparents John William and Burilla (Jones) Slack. Any info is appreciated.