Not sure if you are still our there, but Commodore Donnohue is my GGGrandfather. Missouri was his sister. Based on Commodore's death certificate, their father was James T. (Thomas?) Donnohue of Perry County Missouri. The mother was Sarah Parker who is dificult to find but is said to be native american according to family history. You can find James and Sarah in the 1850 Federal Census for Perry County, MO where Commodore was born two years later. The child Van is actually Van Buren who was born to James and his second wife Parallee. Caroline and Ethel Kemp were the daughters of Missouri and Jesse Kemp (Bn 1852). Later Missouri married Thomas Williamson and bore Oscar Lee in 1889. If you need anything further please let me know. I have done extinsive research on this family.