Cape Smith and Mary Jane Grisset were my gg-grandparents.
In the 1900 Federal Census for Escambia Co., Alabama, Cape is shown living with his two children Ardelia (Dealia or Deelie, my g-grandmother) and Charles, as well as his sister, Eliza. Mary Jane is shown next door--they may have been divorced by then.
I had supposed that Cape Smith the elder was our Cape's father. Do you have documentation that it was Robert?
Cape Smith the Elder is shown in a 1907 Confederate reunion in Escambia County Alabama and there are civil war records available for him. He may have been born in Monroe Co.
I would like to share info with you.