The king, with Pole himself out of his reach, took revenge on Pole's family for engaging in treason by word against the king. This later became known as the Exeter Conspiracy. The leading members were arrested, and all their properties seized. The action destroyed the Pole family. Sir Geoffrey Pole was arrested in August 1538; he had been corresponding with Reginald, and the investigation of Henry Courtenay, Marquess of Exeter (Henry VIII's first cousin and the Countess of Salisbury's second cousin) had turned up his name; he had appealed to Thomas Cromwell, who had him arrested and interrogated. Under interrogation, Sir Geoffrey said that Henry Pole, 1st Baron Montagu, and Exeter had all been parties to his correspondence with Reginald. Montagu, Exeter, and Lady Salisbury were arrested in November 1538, together with Henry Pole and other family members, on charges of treason, although Cromwell had previously written that they had "little offended save that he Pole is of their kin". They were committed to the Tower of London and, with the exception of Geoffrey Pole, they were all eventually executed.