Catherine of Aragon serves as the first known female ambassador, representing the Aragonese crown at the English court.
Around January 1507, Catherine of Aragon assumed the role of ambassador for the Aragonese crown in England, an unprecedented position for a woman at the time. This appointment marked a groundbreaking moment in European diplomacy, showcasing Catherine's astute understanding of political dynamics and her ability to navigate complex international relationships. Her ambassadorship was necessary due to financial disputes following her widowhood, and she handled the negotiations with remarkable skill. This achievement not only underscored her influence within the diplomatic sphere but also challenged gender norms of the era, paving the way for future women in diplomacy.