Still Looking for My Grand Parents

So far I found out that my grandfather cox's first name is not R or A. Its should be Manson, but Im only find the middle name manson cox and no first names. Thats grandpa.

Now my grandmother, lol.
Well she had a few names. Her last name was given to me by my uncle as pinkston, but its not. I found out my great grandmothers name was eliska maggie margaurite picou and she married a verdin, so my grandmothers name was maggie or marguarite verdin.

I dont know where pinkstons came in at because my grandmother only married to a hines/hynes not sure of the spelling.

Oh this is a job. Anyone have any info that can help me, please let me know.

Thank you.