There are still mixed Atakapa in southern Louisiana. Atakapas mainly mixed in with the French, and blacks, and other Native American tribes. Houmas and Chitamachas may have some Atakapa ancestry. I was reading Oppalousa are a branch of Atakapa and there are still Oppalousas. I was also reading about a lady that died in the I believe in the 60s or 70s she was the last fluent speaker of that language. That being said. my last name is Fountano, and I am from San Antonio, Texas, my great great grandfather is from Louisiana, I believe his last name may have been Fonteneau or Fontenot. Fountano is almost pronounced the same way. Well me and my male cousin from my paternal side tested Y chromosome Native American from different companies. We are African American with various ancestries. The Native American part sticks out like a sore thumb. It maybe Atakapa or some tribe close. (Houma, Chitamacha, or Choctaw, etc). I am trying to find out.