Record

EV ID	EV-0252
Title	The National Archives OS 35/2503: Ordnance Survey object name book for sheet Glamorgan 47 NW (1898–1942), parishes including Llandough
Date of document	1898–1942
Type	archive catalogue entry
Evidence label	CATALOGUE ENTRY ONLY (snippet; record not seen)
Repository / reference	The National Archives, Kew, OS 35/2503: Discovery C5503584
Status	SOURCE PENDING (not seen; free to view at Kew; copy would be a paid order)
Provenance	Free TNA Discovery search, 19 Oct 2026.
Related evidence	Ordnance Survey request of 27 June 2026 (map naming of Ty Mawr / Great House Farm); County Series sheet Glamorgan XLVII.6

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Quotation (verbatim): “Object name book for Ordnance Survey sheet Glamorgan 47 NW; parish(es): Caerau, Cardiff, Cogan, Leckwith, Llandaff, Llandough, Michaelston-le-Pit, Saint Andrews Major, Wenvoe”

Fits with: Object name books record each named feature on a sheet with the authority for the name. If it lists “Great House” / “Ty Mawr”, it would show how the farm was named and on whose authority between 1898 and 1942, relevant to the farm’s identity and the Parcel A question (R5).

Cuts against: Catalogue line only. Whether it lists the farm, and what it says, is unknown.

Notes: Asked of Ordnance Survey in the 20 Oct draft whether later name books or revision records exist.

Catalogued by Sion’s Tab agent, 19 Oct 2026, free online sources only.