Michel Rolland.
>https://www.wine.com/list/wine/opus-one/7155-7459#learnAboutContent
Opus One is a partnership founded by Baron Philippe de Rothschild of Chateau mouton Rothschild in Pauillac, France, and renowned Napa Valley vintner, Robert Mondavi.
>https://www.winespectator.com/webfeature/show/id/Mondavi-Hires-High-Profile-Consultant-Michel-Rolland_20984
California's Robert Mondavi Winery is employing the services of globetrotting wine consultant Michel Rolland to beef up its Merlot program.
>https://www.thewinecellarinsider.com/california-wine/quintessa-napa-valley-california-cabernet-sauvignon-wine/
Michel Rolland joined the team as their consultant in 2010.
Quintessa Faust, which made its debut in 2002 is designed as their second wine. The wine is made from a combination of young vines, declassified lots of Quintessa and purchased grapes. The majority of Faust comes from the purchased fruit.
>https://www.winespectrum.com/former-screaming-eagle-winemaker-andy-ericksons-new-wine-leviathan/
And of course Michel Rolland has been a great influence on me, pushing me always to improve things in the vineyard and winery. He has become a great friend and mentor, and we work well together.