The person credited with creating the first ambitious Douro wine is Fernando Nicolau de Almeida, who worked as an oenologist with the Port house Ferreira.
For most of the 20th century, the winemaking styles of Pomerol were influenced by University of Bordeaux oenologist Émile Peynaud and his work on the Cabernet Sauvignon grape in the Médoc.
Entries for individuals are limited by the strict criteria of "a long track record" and "global significance"; hence French worldwide consulting oenologist Michel Rolland and even Soviet premier Mikhail Gorbachev have entries, while California oenologist Helen Turley is omitted.