[1] His godparents were his aunt Isabel of Viseu, and his cousins Jaime, Duke of Braganza, and João de Almeida, 2nd Count of Abrantes.

[6] Luís's amiable nature earned him both admiration among the nobility and widespread popularity among the people, standing out as an educated, affable, and jovial prince in stark contrast to his more somber older brother, John III.

[7] Luís was granted the title of Duke of Beja on 5 August 1527,[8] as well as possession of several parishes and municipalities that spanned Beira and Alentejo.

His estates expanded following the death of the Countess of Marialva in 1537,[b] making his household the most extensive in Portugal, in terms of revenues and dependents, second only to John III's.

[7] Luís played a crucial role in the campaign by orchestrating a strategic maneuver with the Botafogo spur ram that successfully broke the defensive chains at La Goletta, allowing the Christian allied fleet to access and conquer Tunis.