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