I must take this opportunity of complaining of the manner in which many, if not all these Peerages, are compiled: copying each others' errors, however obvious, without a word of doubt or an attempt to rectify them; though MR. HARDY's communication, above mentioned, shows that the materials for doing so, in many cases, exist if properly sought. Not to mention minor errors, they sometimes crowd into a given time more generations than could have possibly existed, and sometimes make the generations of a length that has not been witnessed since the patriarchal ages. As instances of the former may be mentioned, the pedigree of the Ferrerses, Earls of Derby (in which eight successions from father to son are given between 1137 and 1265), and those of the Netterville and Tracy families: and of the latter, the pedigree of the Fitzwarines, which gives only four generations between the Conquest and 1314; and that of the Clanricarde family. It is strange that Mr. Burke, who appears to claim descent from the latter, did not take more pains to rectify a point so nearly concerning him; instead of making, as he does in his Peerage, one of the family to have held the title (MacWilliam Eighter) and estates for 105 years!--an absurdity rendered still more glaring by this long-lived gentleman's father having possessed them fifty-four years before him, and his son for fifty-six years after him. If such can be supposed true, the Countess of Desmond's longevity was not so unusual after all. J. S. WARDEN. * * * * * THE ORDER OF ST. JOHN OF JERUSALEM. (Vol. vii., p. 407.) May I be allowed to inform your correspondent R. L. P. that he is in error, when supposing that the English knights were deprived of their property by Queen Elizabeth, as it was done by act of parliament in the year 1534, and during the reign of Henry VIII. For the information sought by your correspondent R. L. P., I would refer him to the following extract taken from Sutherland's _History of the Knights of Malta_, vol. ii. pp. 114, 115.: