It is true that, fifty years afterwards, in a petition to the House of Lords[66] by Lord Denbigh against a claim made by a son of Robert Wright, it is stated that Lord and Lady Purbeck had not lived together as man and wife for two years before the birth of Robert Wright; and that Lord Purbeck "was entrusted in the hands of physicians for the cure of a melancholy distemper, occasioned by the cruelty and disorders of his wife." But this claimed absence of two years, or anything approaching two years, is very questionable, if not very improbable; and although there is not much doubt as to the real parentage of Robert Wright, Purbeck may have lived with his wife sufficiently near the birth of the boy to imagine himself his father. Indeed, as the following letter will show, she was so far at Court, as to be living in Prince Charles's house so late as February, 1625, a year after the birth of the boy. Moreover, as we have seen, Lord Purbeck held office in Prince Charles's household, and from this it might be inferred that Purbeck and Lady Purbeck were then together. This is the more likely because in the following letter Buckingham expresses a fear that his "brother will be also every day running to her and give her occasion to worke on him by the subtlty of her discourse." And if the husband and wife had access to each other when the proceedings against the latter had gone so far, they are much more likely to have been together during the year preceding the birth of the boy. All this only affects the question whether Purbeck discredited his wife's fidelity. Nothing has been said above in favour of the theory that she was faithful. Buckingham experienced considerable difficulties in the prosecution of Lady Purbeck. On 15th February, 1625, he wrote[67] from Newmarket to the Lord Chief Justice:-- "MY LORD, "I understande you are not yet resolved to committ my sister Purbeck who (if she be at Libbertie) will be still plotting and devising with her ill counsellors to cover and conceal the truth and fowlness of her crime and my brother will be also every day running to her and give her occasion to worke on him by the subtlty of her discourse. It is known that His Ma^tie was tender (at the first mention of this business) of the hande of a Lady of her quallity but sure [if] he hath fully understood the proofs and truth of her fault and how dishonorably she hath carryed herself he would have no more support showen to her than to an ordinary Lady in the like case for that she hath by her ill carriage forfyted that hande." Things were not going so well now as they had been with Buckingham. Within twelve months he was to be impeached in the House of Commons; and, although still high in the royal favour, his King may not have been so completely his servant at this time as he had been formerly. Buckingham continues:--