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. However, DNA testing in the early 21st century confirmed that Pineau d'Aunis is not related at all with Chenin blanc nor Pinot noir, with which it is frequently confused.