Complex sentence: Martin de Telleria was born in Guipúzcoa, he had departed from the port of San Sebastián in July 1659 to Buenos Aires, arrival in early 1660 aboard Ship "Nuestra Señora de Aranzazu".
Split into simpler sentences: Martin de Telleria was born in Guipúzcoa, he had departed from the port of San Sebastián in July 1659, bound for Buenos Aires. The crew had arrived at the port of the city in 1660, aboard the Ship "Nuestra Señora de Aranzazu".