If you know when in 1957 Leo Holbrook died, you can obtain a copy of his death certificate, which should have his birthdate, and names of his parents.Accuracy only as good as the knowledge of the informant.You won't find him on the SSDI because that computerized index begins with deaths that occurred about 1962.But, you can obtain a copy of the application he filled out for his Soc Sec card, and it should have his birthdate and names of his parents.Even if you do not have his SS number, you can apply.Here is a site with info on SSDI and how to obtain a copy without a SS number.
I checked your message history to see if you had anything else on the family. Henry C. Kiel d 1902, do you know when in 1902?If so, I would certainly look for an obituary for him.You never know what they will include, survivors are usually listed, giving you more people in the family to track, plus a good way to pick up names of married females in the family.And, it might mention the railroad company he worked for.Do you know where along the Pecos River the railroad bridge was built?With a location and the name of a railroad company, you might find something through the state archives in Austin.Worth a try.
Have you looked for John & Florence Whitehead on the 1900 census?It will give month and year of birth of everyone in the household, how many children a woman has had and how many living a the time of the census, birth locations of the parents of everyone, too.You stated the Whiteheads were married and together in 1883.Were they married prior to 1880?If so, look for them on the 1880 census.If you do not have access to the multi CD set for the 1880 census, there are people on this forum who have their own sets.Post a query with subject "Need 1880 census lookup."Now, if they were not married prior to 1880, and you have found them on the 1900 and have month & year of their births, location of their births, and location of birth of their parents, then you can ask someone to look for each of them on that 1880 CD set.It contains an EVERYNAME index, so you can look for wife, children, or anyone living in the household in 1880. Name, birth year and birth location help to narrow the search options. Happy Hunting (^_^)