North Wales and border county pedigrees and genealogical data mainly in the hand of Jonathan Jones, Caernarfon; poems; a copy of the will of Henry Rowlands (1551-1616), bishop of Bangor.

Pedigrees, copies of manuscripts, extracts from original and published sources, genealogical notes, copies of monumental inscriptions and correspondence relating to Owen of Clenennau and Brogyntyn, [1702x1823]-1882, and other families who were related to them by marriage or who were relevant to the history of the estate, namely Anwyl of Parke, [18 cent., first quarter], 1751, Derwas and Lyster of Penrhos, 1767-[post-1823], Eure, [post-1861], Godolphin, 1724x1868, Longueville, 1830-1833, Mostyn, [1729x1744]-1951, Vaughan of Corsygedol, 1698-[c. 1795], Wynn(e) of Glyn, Gwydir and Peniarth, 1790-1837, Wynne of Garth, 1753, and miscellaneous others, [post-1727]-1862.

A notebook containing genealogical notes and pedigrees mainly of North Wales families in the hand of W. W. E. Wynne. On p. iii 'Peniarth M.S. No. 47' has been corrected to '18'.

Pedigrees of North Wales and border counties families, with many coloured coats of arms.
This manuscript is possibly a copy of the seventeenth-century Owen Salusbury of Rhug and John Salusbury of Erbistock genealogical collection (see also NLW MS 1504E).

Pedigrees of North Wales and other families, genealogical notes and correspondence.

A genealogical account of the descendants of Meredith Wynn ap Evan ap Robert of Gwyder, and other families, roughly written in a hand which resembles that of Dr Humphrey Humphreys.

Rough drafts of genealogical tables of the following families: Stanley, Griffith, Bulkeley, Coetmor, Williams and others. Several of the papers are in the autograph of Bishop Humphreys.

A pedigree roll in a hand similar to that of Morris Evans of Llanfyllin, Montgomeryshire, antiquary, showing the descent of some principal North Wales families, including the Owen family of Brogyntyn and Clenennau, from Owain Gwynedd, king of Wales, and the fifteen tribes of Gwynedd.

A volume almost entirely in the hand of Ebenezer Thomas ('Eben Fardd') containing pedigrees mainly of North Wales families (e.g. 'Achau awdur y Bardd Cwsg' [i.e. Ellis Wynne], the families of Herbert of Powis, etc., Mostyn of Mostyn, etc., Salisbury of Lleweni, Hanmer of Hanmer, Meirick of Bodorgan, etc.). Inset is a pedigree chart by 'Eben Fardd' entitled 'Llwyth Ceridwen-Gwehelyth Llên ac Awenydd Eifion yn y XIX Ganrif' (references to Owen Owens ('Owain Lleyn'), Robert Williams ('Robt. ap Gwilym Ddu'), Ellis Owen, Cefnymeusudd, Robt. Isaac Jones ('Alltud Eifion'), Ebenezer Thomas ('Eben Vardd'), etc.), together with an undated covering letter by the scribe.

A miscellaneous volume (496 pp.; original pagination incorrect) in the autograph of Owen Williams (1790-1874; 'Owain Gwyrfai'), c. 1841-67, of which the main contents are pedigrees of North Wales families transcribed from manuscripts of the Reverend D. Ellis [Cricieth] and Owen Gruffydd, Llanystumdwy and from other sources (with some additions to Owen Williams's own day); transcripts of twenty-four letters, 1752-7 and 1767, from Goronwy Owen to Richard Morris from a (?)manuscript of Mr Loyd [sic], Plasmeini, Festiniog and of eleven letters, 1752-4, from Goronwy Owen to William Morris ('D.S. Dyma lythyrau'r Gwiliedydd im tyb i. O.W.', but this seems doubtful), and extracts transcribed from the introduction to Lewis Morris's 'Celtic Remains' and from [John Reynolds, A Display of Herauldry (1739)] ('Yr hanesion canlynol a dynwyd o hen lyfr achau a argraffwyd o ddeutu amser Cromwel o waith Reinols'). There is a rough index at the beginning and end of the volume. J. H. Davies has written the following note in pencil on the fly-leaf: 'This is the Llyfr Coch which O[wen] W[illiams] always carried under his arm at Eisteddfodau & Literary meetings. It was originally bound in a red cover.'.

A manuscript containing North Wales pedigrees, mainly of Anglesey and Caernarfonshire families; transcripts by Angharad Llwyd (1780-1866) of other Welsh pedigrees and of legal and historical records; letters to Angharad Llwyd from Sir Samuel Rush Meyrick (1783-1848), John Hughes, barrister, and W. W. E. Wynne (1801-1880); correspondence from Viscount Bulkeley (1736-1791), 1774, to John Lloyd (1733-1793), Caerwys, father of Angharad Llwyd.

'Welsh Genealogies from Various Sources', being mainly pedigrees of North Wales families, together with copies of wills, extracts from parish registers, etc.

North Wales pedigrees copied from 'Llyfr Melyn Tyfrydog', which is said to be a transcript, made [c. 1766], by Hugh Hughes ('Y Bardd Coch') of a manuscript owned by Lewis Morris; papers relating to persons and places in North Wales and to the diocese of Bangor; 'englynion'; correspondence between W[illiam] Wynn Williams, Jonathan Jones and Lady Chandos Reade; etc.

A volume of pedigrees of North Wales families labelled Taicroesion MSS, with additions and corrections by Thomas Williams, Bryn, Beaumaris and his nephew, John Williams.

Pedigrees of North Wales families, possibly an early transcript of the Taicroesion manuscript.

Pedigrees of North Wales families, possibly a transcript of the Taicroesion manuscript, with additions by Hugh Robert Hughes (1827-1911).

North Wales pedigrees copied by Thomas, together with recipes, poems, etc.

A nineteenth century manuscript containing pedigrees of North Wales families, mainly of Caernarvonshire and Anglesey, with letters and additional notes.

Pedigrees of North Wales families.