A composite manuscript containing:
(i) pp. 1-2. A large folio sheet, folded, containing pedigrees in the hand of Robert Vaughan, evidently part of the draft of his lost ‘Llyfr Achau y Deheudir’ [see P.C. Bartrum, ‘Notes on the Welsh genealogical manuscripts’, Transactions of the Honourable Society of Cymmrodorion, 1968, 63-98, esp. 86].
(ii) pp. 3-106, 151-334. An informal collection of Welsh pedigrees mainly written by Gruffudd Hiraethog in a variable hand over the period 1554-64 (see dates on, e.g., pp. 47, 229, 237, 239, 264, 269, 281). There are substantial sections (e.g. pp. 5-19, 23, 25-6, 31-5) and many additions in the hand of Wiliam Llŷn, some dated, e.g. 1570 (p. 250) and 1572 (p. 312). Foliated by Wiliam Llŷn; his ‘Tabl’ is on pp. 5-19. There are contributions by other hands, all contemporary with Wiliam Llŷn if not also with Gruffudd Hiraethog: A, an educated secretary hand, concerned with Edeirnion (pp. 36-7 and 58); B, Simwnt Fychan (p. 39); C, Huw Llŷn (‘Llyma gof am yr amser y bu Eisteddvod ynghaerwys … 1567’, pp. 59-63); D (pp. 174-5, where he offers a deviant opinion on the ancestry of Owain ap Bradwen, citing ‘rai yneheubarth’ and ‘John Wynn Unllawiawc’, and pp. 219-22); E (pp. 191-2); F, apparently from south-west Wales (pp. 193-4 and 196-211); G, ostensibly ‘per me Morgan Elfel’, but in a hand not recognizably his (pp. 275-7); H, a bold secretary hand, concerned with Cegidfa (pp. 283-90); I (pp. 297-9). Predominantly, the pedigrees relate to north Wales, but those on pp. 153-229 are mainly south Welsh. Gruffudd throughout is characteristically helpful in naming his sources [see P.C. Bartrum, ‘Genealogical sources quoted by Gruffudd Hiraethog’, National Library of Wales Journal, 26 (1989-90), 1-9]. Apart from pedigrees, other texts in the manuscript include ‘Dosbarth Arvau … o gynulliad Wmffre Llwyd o dref Ddinbych’, in the hand of Wiliam Llŷn [printed in Transactions of the Denbighshire Historical Society, 17 (1968), 66-82] (pp. 67-90). On p. 102, Gruffudd notes ‘Henwe hen brydyddion’, evidence of his acquaintance with the contents of the Hendregadredd manuscript (NLW MS 6680).
(iii) pp. 107-50. A valuable collection of genealogical tracts, of south Wales bias, written by an excellent hand temp. Henry VIII (see pp. 143, 149). Tracts include Y Pedwar Brenin ar Hugain, Pum Oes Byd, Bonedd y Saint, Rhandiroedd Powys, besides south Wales pedigrees. Of the hand, Robert Vaughan notes on p. 107, ‘llaw Lewys Morganwc sydd yn calyn medd Rys Cain’. This attribution is rightly rejected in P.C. Bartrum, ‘Notes on the Welsh genealogical manuscripts’, Transactions of the Honourable Society of Cymmrodorion, 1968, 63-98, esp. 74, and id., 1988, 37-46, esp. 41-2, where it is observed that these pages are cited elsewhere by Gruffudd Hiraethog as ‘Llyfr Lewys ap Edwart’ and as ‘Llyfr Ieuan ap Huw Kae Llwyd’. Gruffudd Hiraethog added text on pp. 141-2, which had been left blank.