You wrote: "John married Lurena Street, John died shortly after Civil War. Lurena and her children moved to Texas. All Parracks I have found in Texas descend from Lurena's children"
Well, cousin, just to keep the record straight, my Texas Parracks did not descend from John and Lurena. My line goes from James Sr. (1762-1820) to his son Samuel (1794-1870), then to Samuel's son Alfred Smith Parrack (1824 - ?, the first to hit Texas),to Alfred's son John Charles (1854-?), and to John Charles'son William Smith, who died in Erath Co., TX, in 1950. Eight children survived him, in turn producing a goodly number of their own children, grandchildren,etc.
The above John Charles had at least two siblings, Madison and Margaret, about whom I have practically no information. It's quite possible Madison produced some offspring - though I've yet to see any evidence of it.
Additionally, a number of Bazel (eldest son of James Sr.)Parrack's descendants are scattered about the state, especially in the Lubbock area, I believe.