 Other accounts say that Charles' gift of Pineau d'Aunis was made to John VI, Duke of Brittany instead.In 1816, André Jullien described Pineau d'Aunis as being widely grown throughout the Loire, particularly in the Loches commune of Touraine.In 1845, French ampelographer Alexandre-Pierre Odart described Pineau d'Aunis as "Chenin noir" which led to speculation that Chenin blanc, the notable Loire grape of Vouvray and Savennières, was a color mutation of Pineau d'Aunis.