His wife was Queen Breha. She ordered General Luke Skywalker to take Leia to Ophuchi to gain the help of the Chrome Companies and place her daughter on the throne. Evidently, the Aquilaeans practiced strict primogeniture, as Leia's younger brothers were later in the line of succession.
Kayos was found in the rough draft of the original film. His wife's name would be used in Episode III for Leia's adoptive mother on Alderaan. While Kayos was eventually replaced by Prince Bail Organa.
- The Star Wars: Rough Draft
- Star Wars: The Annotated Screenplays
- The Making of Star Wars: The Definitive Story Behind the Original Film
- "The Star Wars" — Star Wars Insider 144