Subject: Catalogue check – ERC RCS2/1/1777 “Great House (Ty Mawr), Bonvilston”
From: Sion Buckler
Direction: sent
Date: Tue, 15 Sep 2026 20:21 UTC
Institution: RCAHMW (Royal Commission)
Refs: none
Archive id: gm-1a0a6bb6d43d5b5f
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Dear NMR / RCAHMW cataloguing team,

Please could you check whether Emergency Recording case RCS2/1/1777 is
correctly assigned.

The Coflein description reads:

Great House (Ty Mawr), Bonvilston – measured drawings, copies of historic
maps, photographic material description and location plan received in the
course of Emergency Recording case RCS2/1/1777, filed in nprn order.

There are two distinct Vale of Glamorgan sites with that name:

1. Ty Mawr / Great House, Bonvilston – still standing, Grade II (Cadw
13603), south side of the A48 opposite St Mary’s Church.

2. Great House Farm, Llandough (near Penarth) – NPRN 20182, ST1681073310,
demolished 6 December 1988. RCAHMW already holds NMR Site Files for it
(plan with additions dated 12/12/1988; Suggett account; press cuttings).

Emergency Recording of measured drawings, historic maps and photographs is
the pattern one would expect for the Llandough demolition, not for the
surviving Bonvilston house. Adjacent ERC case RCS2/1/1776 is also of that
period.

Could you confirm from the location plan / map copies / photographs in the
RCS2/1/1777 bundle whether the site is Bonvilston (A48 / church opposite)
or Llandough (St Dochdwy / farm group)? If it is Llandough, please re-link
the file to NPRN 20182.

Happy to supply further identifiers if useful.

Regards,

Sion Buckler