Family: Joseph Charles Blacknall & Wanda Mae Gravis
| Husband | Male Joseph Charles Blacknall |
| Born | 16 Aug 1913 | Arkadelphia, Clark County, Arkansas  |
| Died | 28 Jun 1962 | Corpus Christi, Nueces County, Texas |
| Buried | ||
| Married | ||
| Father | ||
| Mother | ||
| Wife | Female Wanda Mae Gravis |
| Born | 3 Jan 1925 | Corpus Christi, Nueces County, Texas |
| Died | 27 Dec 1988 | |
| Buried | Aft 27 Dec 1988 | Rose Hill Memorial Park, Corpus Christi, Nueces County, Texas |
| Father | Richard C. Gravis | Family Group Sheet | |
| Mother | Bernice Melissa Frost | Family Group Sheet | |