Complex sentence: His grandparents were Mariano Canavery and Tiburcia Sosa Ravelo, both grandparents had dedicated to teaching, Mariano Canaverys was tutor in Escuela de la Piedad (the primary school in the city).
Split into simpler sentences: His grandparents were Mariano Canavery and Tiburcia Sosa Ravelo. Both grandparents had dedicated to teaching, Mariano Canaverys was tutor in Escuela de la Piedad (the primary school in the city).