Complex sentence: The city was formerly called, in full:'Santísima Trinidad de los Porongos'--(Most Holy Trinity of the Porongos); but even today, inhabitants of the town are called in Spanish either'trinitarios' or'porongueros'.
Split into simpler sentences: The city was initially called:'Santísima Trinidad de los Porongos'--(Most Holy Trinity of the Porongos). Even to this day, the inhabitants of the town are called in either'trinitarios' or'porongueros'.