During this period they attacked ships which unknown to them belonged to the Dutch pirate Laurens de Graaf, on meeting de Graaf on Bonaco Island they asked him to join them.
They attacked ships. This was during this period. This was what they asked him to join them. These ships unknown to them belonged to the Dutch pirate Laurens de Graaf. This was on. These ships unknown to them were meeting de Graaf on Bonaco Island.