Melissa, I am digging in my Dumas records and I am not locating this Dumas family.I can see them in 1880, but I can't place them.
I do see Frank and Rosa Jeter in Clarke GA in 1930. I see a Frank and Rosa Jeter in Fulton GA in 1920. I see a Frank and Rosa Jeter in Jackson, Butts, GA in 1910 with children Frank 4 and Elizabeth 6 months.
I also see the SS Death Index in Newport Beach, Orange, CA showing a birth of 13 March 1882 and death of October 1972.
I saw the place where they had the marriage in CA, but if the above is all the same person, it appears the marriage was in Georgia.Having you tried checking the children's birth place to see if they are GA?