Historical records indicate that "In 867, the Bishop of Venasque was given Château Unang by the King of Provence." You can read more about the history of the place until and after the French revolution at this interesting section of the domain's website.

In 2001 the domain was purshased by the Scottish couple James and Joanna King. 
They have restored de old buildings dating back to the early Middle Ages.
By the purchase some of the vineyards were not found good enough and have been uprooted and hasn't been replanted. Some hadn't got the right varieties for the terroir. Some parcels of good terroir were not planted with wines. 
By the purchase 19 ha. were planted with vines. For a period there were only 12 ha. Today (2015) wines are produced from 18 ha. The red wines are made from vineyards around the castle (altitude 300m), and the white varieties from lower situated vineyards.
The vineyards have been certified agriculture biologique since 2012.

Wines:

Wines according to website February 2021

Ventoux Tradition
2017: 75% Grenache, 20% Syrah, 5% Cinsault.

Ventoux La Source
2017: 70% Syrah, 25% Grenache, 5% Cinsault. 
65% aged in barrels for 12 months.

Ventoux La Croix
2017: 60% Grenache, 40% Syrah. 

Ventoux La Gardy
2016: Mainly Grenache
A cellar selection of the best wines of the vintage. 

Ventoux Cuvée 867
2015: 99% Syah. Aged for 12 month in barrels.
"In 867, the Bishop of Venasque was given Château Unang by the King of Provence." 

Ventoux Rosé
2019: 45% Syrah, 40% Grenache, 15% Cinsault.

Ventoux Blanc Tradition
2019: 55% Clairette,  25% Roussanne 10% Grenache Blanc. From the youngest vines

Ventoux Blanc Cuvée Adeline
2019: 65% Roussanne, 20% Clairette 15% Grenache Blanc and other varieties. 20% fermented in new barrels and staying there for 4 month.