Complex sentence: At 6 years old, due to troubled marriage of his parents, Isabelo was entrusted to a rich relative, Meno Crisologo, who later enrolled him into a grammar school attached to their local seminary run by Augustinians.
Split into simpler sentences: At 6 years old, due to troubled marriage of his parents, Isabelo was entrusted to a rich relative, Meno Crisologo. The man enrolled him in a grammar school attached to the local seminary run by Augustinians.