I have hit a dead end looking for my Thompson side of the family. Your grandfather, Albert Oliver, was brother to my grandfather, John Marshall. I found Geolais (Giolois) and Cera listed as Charles' parents when he got married, but I can't find anything else out about them. John Marshall was married in Louisiana to Alice Booth and had a daughter, Pearl, before he married my grandmother Annie E. Moye. He moved to Texas at some point (I assume his first wife died) and married my grandmother in 1899. His daughter, Pearl, lived with the Holcombe family in Robertson County, Texas and was listed on one of the censuses as their "adopted" daughter. I have no idea why she didn't live with her father. I would love to correspond with you and compare notes. I live in Austin Texas. Are you still in the Louisiana area?