Cool the only correct I need to make is that there was some short lived missions in present day austin. Everything else is accurate.
I never said there was no spanish presence in East TX, only that was no MEXICAN presence in East TX established during their 15 year rule of the state.
And I'll add that colonial spanish east TX is certainly not an extension of mexican-hispanic "el norte" at all. If anything the it's an extension of colonial Louisiana. As those few places they settled in East TX were societies that ran off of trade between the spanish, the french, and the natives across the Texas/Louisiana border. It was a sparsely populated frontier of wild uneuropeanized natives, runaway slaves, french and anglo american deserters, and spanish merchants.
In fact Spanish Nacadoches
Colonial East TX was basically a less populated spanish version of colonial Louisiana. In fact it spent 40 years under the same governance as Louisiana when the Spanish bought Louisiana, compared to the 15 years it was under mexican rule.
The French Louisianaian presence and impact in Spanish East TX can't be understanded. It was much more significant than that of the Mexicans. The Spanish weren't even interested in East TX until french louisianaian pirate René-Robert Cavelier built his settlement along the matagorda bay in present day houston metro(not proper). Before that there was no Spanish presence in Colonial East TX.
The first permanent european settlement in Galveston was established by French Louisianaian pirate Louis Michel Aury for the purpose of establishing trasporting African slaves back and forth from Louisiana to Galveston. Anglo American explorers, pirates, and rebels working with mexican revolutionaries, like Warren Hall & Henry Perry were also involved in this trade.
Even in the Mission Nuestra Señora de la Luz outside of Houston you mentioned was established for the very purpose of disrupting French trade with indian that was happening there at was built on top of a french trading post that was there BEFORE the spanish mission.
Mission Nuestra Señora de la Luz - Spanish Missions/Misiones Españolas (U.S. National Park Service)
So, which ever way you slice it the spanish were not the first non native settlers in the Houston area or even East TX as a whole. And even the spanish settlements themselves were more akin to the culture of louisiana than "el norte". In Galveston an actual slave trading based afro-anglo-french society existed before the spanish finally settled.
Not at all like the fully hispanized biracial mestizo(euro/indo) of Colonial South and West Texas which were actually like and tied to the society of northern Mexico itself.
So, unless you're going to say that the french and spanish history of Louisiana takes away from it's southernness and ties it more to the caribbean or something then you can't say the Spanish history of east TX takes away from it's southerness and ties it to "el norte".