On 22 December in that year, Pepys noted: This day I hear for certain that Lady Castlemaine is turned Popish. In illustration of this entry, Lord Bray-brooke printed an extract from a letter of the count dEstrades to Louis XIVin which he wrote that the marriage of chevalier de Gramont and the conversion of Madame de Castlemaine were published on the same day. This fact would never be gathered from the statement in the Memoirs, that Gramont was recalled to France by his sister, the marchioness de Saint-Chaumont, who told him that the king had given him leave to return. When he arrived, he found that it was all a mistake. His brother, marshal de Gramont, had orders from the king for him to go back again without appearing at court.
Sir William Musgrave fixed the date of the occurrences recorded in the Memoirs from 1663 to 1665; but Cunningham fixes the longer period of May, 1662, to October, 1669, supposing, as we have already seen, that Gramont remained in England until the end of the book.