Complex sentence: Seguin married María Josefa Becerra, daughter of a noncomissioned officer from Presidio La Bahía (Goliad, Texas), stationed at Bexar; unusually for the times, Becerra could read and write.
Split into simpler sentences: Seguin married María Josefa Becerra, daughter of a non-commissioned officer from Presidio La Bahía (Goliad, Texas), stationed at Bexar. Unusually for the times, Becerra could read and write.