Involved in Catholic resistance to Nazism, he was imprisoned in the Priest Barracks of Dachau concentration camp in 1944.
He has been honoured as a Righteous Gentile by Yad Vashem, Israel's Holocaust Memorial.
[1] During the Second World War, Piguet allowed Jewish children to be hidden from the Nazis at the Saint Marguerite Catholic boarding school in Clermont-Ferrand.
He was arrested by German police in his Cathedral on 28 May 1944 for the crime of giving aid to a priest wanted by the Gestapo.
[2] At Dachau, Piguet presided over the secret ordination of Blessed Karl Leisner, who died soon after the liberation of the camp.