Needing help on the following:

William Calvin Haley born 1842 married Tabitha Katherine Simms.

Had a daughter martha Jennie Haley. She married a Roland Edgar Jones first and had 4 children: Bertha, John Edgar, Andy C and Charley C. They divorced and remarried to Thomas Jamees Phillips they had 4 children.

I am trying to find out what happened to Martha's children with Roland-Andy and Charley. I see they are with their gparents 1900 census and have taken on the maiden nameof Martha.

Also trying to figure out who William Calvin Haley (her father) parents are. Can anyone help?

Thanks!