Original: In either case, a certain Major Dubied acquired the formula from the sisters and in 1797, with his son Marcellin and son-in-law Henry-Louis Pernod, opened the first absinthe distillery, Dubied Père et Fils, in Couvet.
Simplified: In 1797,Henry-Louis Pernod, opened the first absinthe distillery, called "Dubied Père et Fils", in Couvet.