During their imprisonment, Francis Dacre, Leonard's third brother, thought the time opportune for despoiling his nieces of their patrimony.
Except for another quarrel with his monks, who accused him of despoiling their church and gained the ear of Pope Adrian, the last part of his life was laborious and uneventful.
Immediately afterwards Augustus was persuaded by the plausible Livonian exile, Johan Reinhold Patkul, to form a nefarious league with Frederick of Denmark and Peter of Russia, for the purpose of despoiling the youthful king of Sweden, Charles XII.