Complex sentence: His father, Carlos Sebastian Blake Hernandez, was a civil engineer, and his mother, Estrella Lozano Garcia, was the daughter of a horse rancher and grew up on the family's ranch near Matamoros.
Split into simpler sentences: His father, Carlos Sebastian Blake Hernandez, was a civil engineer. His mother, Estrella Lozano Garcia, was the daughter of a horse rancher and grew up on the family's ranch near Matamoros.