Brogyntyn Hall was the home of the Ormsby-Gore family from 1815, and had previously been the estate of their ancestors the Maurices and Owens since the sixteenth century.
A manuscript known to have been in the possession of Brogyntyn in 1574 was a copy of the Hanes Gruf(f)udd ab Cynan.
The house itself is of brick dating from circa 1730 refaced and much added to between 1813–20 by the architect Benjamin Gummow.
[7] It is known that Sir Robert Owen of Brogyntyn (d. 1698) was a bibliophile who continued the family's traditional patronage of poets and a collection of printed English literature was developed by his grandfather Lewis Anwyl of Park.
[2][8] The manuscripts from the Brogyntyn Library include a medieval psalter and a version of Geoffrey of Monmouth's Historia Regum Britanniae, both from the thirteenth century, a fifteenth-century miscellany in Middle English, a volume of the Welsh laws of Hywel Dda, and pedigrees, genealogy and heraldry of families in Wales.