Llantwit Major Grange was a grange of Tewkesbury Abbey from the early 12th century to 1539. It consists of a series of enclosures measuring c.300m NNW-SSE by at most 88m, defined by scarps or banks and ditches, extending north-south on the west of the Ogney Brook.

It was excavated in 1912-14 and 1937.

(sources: RCAHMW 1982 Glamorgan III.2, 299-303.

Includes:
Dovecote (Nprn37592)
Gatehouse (Nprn307455)
Tithebarn (Nprn307457).

Associated with:
St Illtyd's church (Nprn171).

J.Wiles 18.12.02