The white grape variety originates from Spain. Synonyms are Laéren, Laeren del Rey, Layren, Layrenes, Malvar, Mantuo Laéren, Mantuo Leyrenes and Temprana Agosteña. This very old Andalusian vine was already mentioned by the Spanish agronomist Gabriel Alonso de Herrera (1470-1539) in 1513 under the name Layrenes in his description of the varieties of Andalusia, Extremadura and Castile. Especially in Castile-La Mancha, Airén and Lairén are often confused or considered identical. However, according to DNA analyses carried out most recently in 2010, they are two genetically different varieties. Lairén should also not be confused with the variety Beba (synonym Lairén). There is a parent-offspring relationship between Legiruela (identical to the Valais variety Prié in Switzerland) and Lairén.