During the night of 15th/16th December 1485, Catherine of Aragon was born at the recently reformed fortified palace at Alcalá de Henares, a town just east of Madrid.
Pregnancy had not stopped Catherine’s mother, Isabella I of Castile, from waging war on the Moors, and she had spent the summer of 1485 moving around Andalucia, following her troops’ campaign. Isabella and her troops finished warring for the year in September, and the Royal Court travelled from Andalucia to Alcalá for the winter, and for the impending birth.