She was raised in the Castle of Infante John, Lord Reguengos de Monsaraz. In 1447 Beatrice accompanied his daughter, Princess Isabel of Portugal, as her Lady in Waiting when Isabel went to marry King John II of Castile and Leon. She became a close friend of the Queen but unfortunately her beauty made Isabel jealous. It is said that a suitor, whom Beatrice had rejected, insinuated to the Queen that Beatrice was a rival for the King’s affections and she imprisoned Beatrice in a tiny cell. There is a story that she shut her in a chest. After a few days a relative, concerned about Beatrice’s welfare, persisted in questioning Isabel – the Queen showed him the chest where, expecting to find a body, he found Beatrice in perfect health. While imprisoned, Beatrice had a vision of Our Lady, who told her to found a new Order in her name.
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