Name: Gerhard Henry Wiggers Death Date: 25 Jan 1960 Death Place: Temple, Bell, Texas Gender: Male Race: White Death Age: 53 years Estimated Birth Date: Birth Date: 24 Oct 1906 Birthplace: Temple, Texas Marital Status: Married Spouse's Name: Father's Name: H.G. Wiggers Father's Birthplace: Mother's Name: Johanna Griffin Mother's Birthplace: Occupation: Butcher-Market Place of Residence: Temple, Bell, Texas Cemetery: Hillcrest Cemetery Burial Place: Temple, Texas Burial Date: 27 Jan 1960 Additional Relatives: X Film Number: 2116047 Digital Film Number: 4166221 Image Number: 2847 Reference Number: cn 161 Collection: Texas Deaths, 1890-1976 [Informant was his wife]
The couple are on the 1930 census in Bell Co, TX with a daughter named Mary, age, 1 ?/12, b TX.
Since Gerhard died later than your grandfather, Gerhard's obituary might have more. By 1960 at least some of the daughters might be married and obits are a good way to pick up married names of female members of the family.
I know Wiggers isn't your blood line, but strangely enough I found Henry G. and Johanna Wiggers on the 1910 census Bell Co, TX, with a son named "Garret", but he's listed as 13. "Gerhard" should be 2 or 3. Another one of those census enumerator errors???