Sarah probably died before 1824. Neither she, nor her husband, was included in the division of the slaves of John Price.
The marriage record is listed as "Susan" Price, but Sarah's sister Susan is known to have married William T. Duncan, so this is apparently an error. There is always the possibility that this Sarah, or Susan, Price does not belong in the family of John Price. I also cannot place William C. Poor in the Poor family.
William likely married again - there is a marriage for William C. Poor to Elizabeth Sumpter on 7 May 1850, but that doesn't explain the children that follow.
However, William C. Price appears to still be living in Logan Co in 1850. District 1, HH 367:
Sarah PRICE and William C. POOR were married on 13 September 1822 in Logan County, Kentucky.136 William C. POOR was born (date unknown).