CHILDREN OF JAMES AND MARY JANE NELSON

Looking for information on the following children of James Nelson and "Mary Jane" (her surname may be Mims/Mimms).
1. Mack Nelson - born about 1866. He was listed in the 1870 and 1880 census for Pike County, GA - living with his parents. He was not in the census for 1900-1930.
2. Emmer Nelson - born about 1875. She was listed in the 1880 census for Pike County, GA - living with her parents. She was not in the census for 1900-1930.
3. Wallace Nelson - born about 1881. He was listed in the 1900 census for Pike County, GA - living with his brother Charles. (His parents died between 1866-1900). He ws not in the census for 1910-1930.
4. Jimmy Nelson - born about 1871. He was in the 1880 and 1900 census for Pike County, GA with his parents. He married a "Mary" around 1901. They were in the 1910 census for Pike County. She had 3 children from a previous marriage: Will Dewberry, Jimmie Dewberry, and Ernest Dewberry. The entire family was not listed in the 1920 and 1930 census for Pike County, GA.
5. William Nelson - born about 1870. He was in the 1870 and 1880 census for Pike County, GA with his parents. In the 1900 census for Pike County, he was married to "Ella" - children: Claud, Clarence, Jimmie and Roberta. The entire family ws not in the 1910 census for Pike County. His son Claud was in the 1920 census for Pike County - married to "Lena" - children: Mattie and Mamie. Claud and his family were not in the 1930 census for Pike County, GA. William, Ella, Clarence, Jimmie and Roberta were not in the census for 1910-1930.
6. Charles Nelson - born about 1863. He was in the 1870 and 1880 census for Pike County, GA with his parents. He married "Anna" around 1887. The had 3 children: Jesse, Jiny and Winy. Charles and his family were in the 1900 census for Pike County, They had 4 more children: Bernice, Bev, Dora and Roza. "Anna" died between 1908-1909. He married "Dink". Charles, Dink and his children were in the 1910 census for Pike County. The entire family was not in the 1920 or 1930 census.