Hi...I show that Samuel Stockton was born in 1815 in Tennessee and died in about 1857. Samuel was alive during the 1850 census but is not mentioned in the 1860 census. The 1860 census shows Porter was 11, Isaac was 9 Matisha was 7, Samuel was 5 and Amanda was 2 and born in about 1858. Her conception date ties to the 1857 death date I show for Samuel.
Hope this helps.