undue influence• And there was not, it seems, any finding that Duval's pressure on his wife to sign constituted undue influence.• Notice, first, the doctrine of undue influence.• Possibilities of blackmail or undue influence.• The first reason is that the apparentconsent or refusal was given as a result of undue influence.• The jury did not, however, find undue influence.• Even if the pressure had constituted undue influence, it would not, in my judgment, have affected the bank.• Besides, Chennault had worked for Chiang and hence was under the undue influence of the generalissimo.