Luísa Casimira de Sousa Nassau e Ligne, Duchess of Lafões (1694–1729), married to Infante Miguel of Braganza (natural son of king Peter II of Portugal), was the first to use this title.
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The House of Lafões descends from the marriage between Infante Miguel of Braganza (King Peter II's natural son) and Luísa-Casimira, 30th representative of the House of Sousa and 6th Countess of Miranda do Corvo.
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John V Miguel of Braganza<----1715----->Luísa-Casimira
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