Probably many of them had been absorbed by intermarriage with the invaders.

At present, there is hardly an Indian of certainly pure blood in the island, and that only in the northern mountains.
Trinidad ought to have been, at least for those who were not Indians, a happy place from the seventeenth almost to the nineteenth century, if it be true that happy is the people who have no history.

Certain Dutchmen, whether men of war or pirates is not known, attacked it some time toward the end of the seventeenth century, and, trying to imitate Raleigh, were well beaten in the jungles between the Caroni and San Josef.

The Indians, it is said, joined the Spaniards in the battle; and the little town of San Josef was rewarded for its valour by being raised to the rank of a city by the King of Spain.
The next important event which I find recorded is after the treaty of 27th August 1701, between 'His Most Christian' and 'His Most Catholic Majesty,' by which the Royal Company of Guinea, established in France, was allowed to supply the Spanish colonies with 4800 Negroes per annum for ten years; of whom Trinidad took some share, and used them in planting cacao.

So much the worse for it.
Next Captain Teach, better known as 'Blackboard,' made his appearance about 1716, off Port of Spain; plundered and burnt a brig laden with cacao; and when a Spanish frigate came in, and cautiously cannonaded him at a distance, sailed leisurely out of the Boca Grande.