infante

Infante, also anglicised as "infant" or translated as "prince", is the title and rank given in the Iberian kingdoms of Spain and Portugal to the sons and daughters (infantas) of the king, regardless of age, sometimes with the exception of the heir apparent or heir presumptive to the throne who usually bears a unique princely or ducal title. A woman married to a male infante was accorded the title... (Wikipedia)