 Vasco Núñez de Balboa, a member of Bastidas' crew, had settled in Hispaniola (present-day Dominican Republic and Haiti) but stowed away on a voyage to Panama in 1510 to escape his creditors.At that time, about 800 Spaniards lived on the isthmus, but soon the many jungle perils, doubtless including malaria and yellow fever, had killed all but 60 of them.Finally, the settlers at Antigua del Darién (Antigua), the first city to be duly constituted by the Spanish crown, deposed the crown's representative and elected Balboa and Martin Zamudio co-mayors.