The Spanish governor at San Juan de…
September 1631 CE
The Spanish governor at San Juan de Puerto Rico—naval and military veteran Juan de Haro—has been in office less than a month when seventeen Dutch ships under Boudewijn Hendricksz appear.
De Haro sends his predecessor, Juan de Vargas, to nearby Boquerón with militia to hinder any landings in Escambrón Inlet.
Yet Hendricksz implements a much bolder plan.
The entire Dutch fleet at 1:00 P.M. the next day sails directly into San Juan’s harbor: Roode Leeuw, Witte Leeuw, Leyden, Blauwe Leeuw, Goude Valck, Utrecht, Nieuw Nederlandt, Hoop van Dordrecht, Kleyne Tijger, Hoorn, Medemblik, Gouden Molen, Vlissingen, West Kappel, Goude Sonne, Koningin Hester, and Jonas.
They exchange shots with the harbor castle, inflicting superficial damage and slaying four Spaniards while gaining a safe anchorage within the roadstead off Puntilla Point, beyond range of de Haro’s artillery.
However, shoals prevent an immediate disembarkation, allowing Spanish noncombatants to flee inland while the governor marshals his slender strength within San Felipe del Morro citadel.
Six additional bronze twelve-pounders are installed in its embrasures, three hundred and thirty men gathering inside (two hundred and twenty effectives, but with abundant supplies).
Hendricksz on September 26 leads seven hundred to eight hundred men ashore and occupies the empty city plus its smaller Cañuela Fortress two days later; the main citadel proves impossible to storm, so the Dutch begin digging saplines and installing a six-gun battery atop Calvario Heights by 29 September.
Hendricksz at 9:00 A.M. the next day calls upon de Haro to surrender but is rejected, so action resumes.