The Master of Sierentz was a painter who is seen as a successor of the Swiss painter Konrad Witz. He is mainly known for his two paintings of Saint George stabbing the dragon and Saint Martin of Tours dividing his coat in two and sharing one half with a beggar which are assumed to have been painted between 1440 and 1450. Both works are exhibited in the Kunstmuseum Basel. The two panels were for some time assumed to have been the wings of a retable at a church in Sierentz, a locality near Basel, hence the artist's Notname "Master of Sierentz". It can't be confirmed with certainty that the retables were in Sierentz. The Master of Sierentz is not to be confused with the Master von 1445, who was initially seen as the painter of the two panels.