Looking for information on the following children off Isom Caldwell an...

Looking for information on the following children of Isom Caldwell and Lucy Ann Madison:
(Looking for information on the following children ONLY)
Andy/Andrew born about 1850. Last seen in the 1870 census for Pike County, GA living with his parents. He was not in the 1880 census for Pike County.
James born about 1850. Last seen in the 1880 census for Pike County, GA living with his parents. He was not in the census from 1900-1920.
Ernest born about 1858. Last seen in the 1870 census for Pike County, GA living with their parents. He was not in the census from 1880-1930. According to my cousin, he had two children: John Ernest Caldwell and Donie Caldwell
Rance born about 1876. Last seen in the 1880 census for Pike County, GA living with his parents. He was not in the census from 1900-1930.
Ennis born about 1860. He was last seen in the 1880 census working as a laborer - living next door to his parents. He was not in the census from 1900-1930.