I just emailed what I could find from the TVRIs.There might be a name or two that aren't yours.
I would suggest that you post at the Harris county board for obiturary lookups for your grandparents.You have to know the dates.Someone might be kind and do a lookup for you.I live in Houston but seldom go to the downtown library where the microfilm is.
I would also post at this board for a "1930 Census Lookup".Put your grandparents ages in.It seems like the children were born between 1920 and 1932. List them with known full given names and appx. birth year and KNOWN birth counties.
If you don't get a response in a few days then go to the Rootsweb.com Texas board and post there also.
Call your local library and see if they are hooked up with Heritage Quest online census records.Most census are online with the exception of 1850, 1880, 1930.They are a little touchy to work with but it's free.
If you need some more specific lookups in the Vital Records let me know Hugh