A heraldic manuscript probably compiled by, and in the hand of, George Owen, in which he blazons the arms of over sixty members of eminent Pembrokeshire families. The work contains some gaps and later additions and corrections have been added by George Owen.

Pedigree and achievement, [1630], of Lewis Powell of Lamphey, Pembrokeshire, in the hand of the herald George Owen, Rouge Croix, with one hundred and twenty coats of arms, all emblazoned and painted. The pedigree is traced from 'Gwilim Cantington alias Cainton' of Eglwyswrw, Pembrokeshire, and 'Gwenlhian daughter of the Lord Rees ap Griffith', both depicted at the head of the pedigree in hand coloured portraits, and also from Rhirid Flaidd, from whom Powell's grandmother was descended. A number of collateral lines are depicted, including those of the Earls of Pembroke and of Worcester and the Warren family of Trewern, Nevern.
It should be noted that various sources, including Peniarth MSS 128, 131 and 132, give Gwilim Cantington's wife as Gwladus rather than Gwenllian (see P. C. Bartrum, 'Plant yr Arglwydd Rhys', National Library of Wales Journal, 14 (1965-66), 97-104 (p. 100)). The pedigree was checked and ratified by Owen and contains a certificate of authentication granting the arms to Powell, signed by Sir Richard St George, Clarenceaux King of Arms.

'Short Pedegrees of Divers, Noble-Men, Knights, Esquires, Gentlemen and Women of Pembrook-shire; containing All, or most of the Eight Ancestors from whom they are Descended. Together With the Armes of most of them', being a transcript, made by John Tinkler in 1888, of Chetham Library (Manchester) MS. 6715.

'Short Pedegrees of Diveres Noble-Men, Knights, Esquires, Gentlemen & Women of Pembrokeshire ... With the Arms of most of them. London, Printed [sic] by John Winter, for the Author, Anno Dom. 1671', being a transcript of a manuscript in the Chetham Library, Manchester.