_Natural Daughter of James II._ (Vol. iii., pp. 224. 249. 280.).--When the answer of C. to my inquiry first appeared, I doubted whether after such strong reproof I ought again to address you; but as your valuable paper was intended for the ignorant as well as for the learned, and as C. (Vol. iii., p. 334.) places your respected correspondent MR. DAWSON TURNER in the same class as my humble self, I no longer hesitate. When I proposed the Query, I had no ready access to any book which would easily give me the required information, and it did not appear to me to be any great sin in making use of "NOTES AND QUERIES" for what I conceive is its legitimate object, the communication of knowledge; and I do not think the space my Query occupied was wasted when it called forth the interesting reply of P. C. S. S. I would now take the liberty of asking C. to explain the following extract from _Souverains du Monde_, not finding any particulars respecting the first marriage here alluded to in those books to which I have been able to refer:-- "Les enfans naturals du Roi Jaques II. sont 1.... 2.... 3.... "4. Catherine Darnley, mariée en premières nôces avec Thomas Wentworth, Baron de Raby; et en secondes nôces, en 1699, avec James, Comte d'Anglesey. Elle est morte en 1700. Sa mère étoit Catherine Sedley, Comtesse de Dorchester, Baronne d'Arlington. "5. N. mariée avec le Duc de Buckingham le 27 Mars, 1706." You will observe that my former inquiry referred to the daughter above stated as the fifth child. It is plain that the compiler of _Les Souverains du Monde_ is in error in making the wife of the Earl of Anglesey a distinct person from the wife of the Duke of Buckingham. Who was the wife to the Thomas Wentworth here mentioned? and, if a natural daughter of James II., I should be glad of the following particulars,--the names of her mother and self--the dates of her birth, marriage, and death--and the date of the death of her husband. I must apologise for trespassing thus at length upon your space. F. B. RELTON. _Clarkson's Richmond_ (Vol. iii., p. 372.).--The late Mr. Clarkson's manuscripts were transferred to his son, the Rev. Christ. Clarkson; whose address might probably be obtained by Q. D. from J. B. Simpson, Esq., Richmond, Yorkshire. M. _MSS. of Sir Thomas Phillipps_ (Vol. iii., p. 358.).--I see that in the "Notices to Correspondents," in No. 79., for May 3, you inform W. P. A. that the _Catalogue of Sir Thomas Phillipps's MSS._ is privately printed, and that there are copies at the Bodleian, Athenæum, and Society of Antiquaries. You may perhaps be interested to know that a catalogue of about three thousand of the Middlehill MSS. is to be found in a work entitled _Catalogi Librorum MSSorum qui in Bibliothecis Galliæ, Hiberniæ, Helvetiæ, Belgiæ, Britanniæ Magnæ, Hispaniæ, Lusitaniæ asservantur: à Gustavo Haenel_: Lipsiæ, 1830. A copy of this important work is in the reading-room of the British Museum.