I was reading your post and got really excited. So My grandpa was William Arthur Moore, Breckenridge, Texas. His father (my great grandfather) was William Dorman Moore of Eastland, Texas. His father (my great great grandfather) is S.L. (Samuel Lindsey) Moore. I can tell you family since then and I'm still tracing back more as well. Thanks to your post I know my great great grandfathers name because all I had before reading your post were his initials S.L. and no one had any info. Maybe we can work together to figure this all out. I currently live in Texas now too. You can get a lot of info on dates of birth and deaths from gravestones if you know about where they might be buried at. The further you go back the harder it is though. Let me know if you have any questions.
Jennifer Pearce (my mom's maiden name is Cynthia K Moore).