The white grape variety (also Würzburg 48-21-4) is a new breed between Müller-Thurgau x Siegerrebe What was published in 2012 DNA analysis was confirmed. The crossing took place in 1948 by the breeder Dr. Hans Breider (1908-2000) at the Bavarian State Institute for Wine, Fruit and Horticulture in Würzburg, The breeder named her after his favorite philosopher, the Spanish poet José Ortega y Gasset (1883-1955). Of the variety protection was granted in 1981. Incidentally, the same parents are also the new breeders Muscabona. Tamara and Thekla emerged.