After the abortive Essex rebellion in February 1601, Oxford was 'the senior of the twenty-five noblemen' who rendered verdicts at the trials of Essex and Southampton for treason. After Essex's co-conspirator Sir Charles Danvers was executed on in March, Oxford became a party to a complicated suit regarding lands which had reverted to the Crown by escheat at Danvers's attainder, a suit opposed by Danvers's kinsmen. De Vere continued to suffer from ill health, which kept him from court. On 4 December, Oxford was shocked that Cecil, who had encouraged him to undertake the Danvers suit on the Crown's behalf, had now withdrawn his support for it. As with all his other suits aimed at improving his financial situation, this last of Oxford’s suits to the Queen ended in disappointment.