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You say you need info on Joseph, then you say you have info to share, so not real sure what parts you need, going to guess it is his parents(?) Do you know when and where Joseph died? TX began keeping vital records in 1903, and you can obtain a copy of his death certificate which should show the names and birth locations of his parents -- if he falls in the right time period.
Have you tried the 1880 census on the chance that Lonnie was not their first child? If you think they stayed in same county, try Williamson Co, TX GenWeb site, some GenWeb counties are putting their cemeteries online. Post a query, ask if anyone has a copy of a published county history, and will they check their copy for any possible info on your family. You can obtain microfilmed county tax records on interlibrary loan through your local public library, from the formation of a county up to about 1940. This would show when Joseph first started paying taxes in the county, and when he stopped - either from moving, or dying. If his name disappears and his wife's shows up on the next year, that would indicate she was a widow.