[2] Nothing remains of a building from either period, with the oldest existing part being the tower, which Cadw dates to the 14th century.

[7] The church at Rockfield became a favoured refuge and a number of Catholic priests are buried in the churchyard, while Matthew Pritchard (1669-1750), Roman Catholic bishop and Vicar Apostolic of the Western District for much of the first half of the 18th century, is interred within the church itself.

[12][c] The restoration was largely funded by John Etherington Welch Rolls, owner of The Hendre, a country estate surrounding the village of Rockfield.

Rolls, and his son and heir, John Rolls, 1st Baron Llangattock, funded the restoration of a number of Monmouthshire churches, while serving the county as High Sheriff and Deputy lieutenant and undertaking a series of expansions that turned The Hendre into "the only full-scale Victorian country house in the county",[13] with "the grandest and most important Victorian park and garden in Monmouthshire.

"[14] Fred Hando, who chronicled the history, character and folklore of Monmouthshire in a series of nearly 800 newspaper articles for the South Wales Argus, published between the 1920s and the 1960s, noted during his visit to Rockfield that two vicars of the church had served as staff members at Monmouth School; the Rev.

[16] In 2022 the church was subject to a robbery that saw the loss of the ten original coping stones which topped the churchyard wall.