Theodore "Ted" Klaus was born in 1895 in Macoupin County, Illinois. 1900 census has him living with his grandparents, Henry & Christina Klaus, in Macoupin County.
I cannot find him ANYWHERE in the 1910 census.
I did find his WWI draft registration, as well as a record of his Army service.
I know who he married (Josephine Dillier), and in what year (1920) but not the exact date & place. I have most of the details about his 6 children. and their families.
I have found him in the 1920, 1930, & 1940 census records. I found his 1942 "Old Man's Draft" registration. I have found his obituary, and that of his wife. I have his Texas Death Index record (Harrison County, March 1985). I have his cemetery information, including photos of both of his headstones (family as well as military).
In short, I have amassed quite a lot of evidence about this guy, who is apparently my 3rd cousin twice removed if Christina (Appel) Klaus was indeed his grandmother.
But for the LIFE of me, I cannot figure out who his parents were!! Somebody on Ancestry has his mother as "Katie Klaus" but nothing further about her, and, of course, no sources other than "Ancestry Family Trees". FWIW, Henry & Christina did have a daughter named Catherine Klaus, born about 1875, about whom I have found nothing past her inclusion in the 1880 census record with her parents. It's possible she could have born him out of wedlock, but that is speculation at best.
Maybe, one of these days, I can track down Ted's marriage license; hopefully in Illinois because back then all SORTS of info was recorded on it!
And, maybe, I'll get the chance to send for a copy of his death certificate from Texas.
And, maybe, I can track down a church record of his birth, or maybe even a "delayed entry" birth certificate, but that would almost certainly entail a trip to Macoupin County, which is about a 3-hour drive each way for me.
Lots of avenues yet to follow. Someday soon, I hope.