It was run as a March castle by the Layards Edwardes of Chirk until removed by the Star Chamber when it was taken up by the Myddelton family.

His son, Thomas Myddelton of Chirk Castle was a Parliamentarian during the English Civil War, but became a Royalist during the 'Cheshire rising' of 1659 led by George Booth, 1st Baron Delamer.

Mullioned and transomed windows were inserted in the 16th and 17th centuries; the castle was partly demolished in the English Civil War and then rebuilt.

These included a number of Slade School of Fine Art staff and alumni such as Philip Wilson Steer, Augustus John and Derwent Lees.

The gardens continued to develop after the English Civil War, including the construction of an outer courtyard to the north, surrounded by stone walls with a wrought-iron gateway.

[11] A panoramic view of the park by Thomas Badeslade, published in 1742, shows the resulting grand baroque layout of formal gardens and avenues.

[12] Most of this layout was swept away by extensive landscaping in the 1760s and 70s, undertaken by William Emes on behalf of Richard Myddelton, including the construction of a ha-ha and the removal of the Davies gates to be re-erected at the New Hall entrance.

In 2018 and 2018 the Clwyd-Powys Archaeological Trust excavated a section across Offa's Dyke here, and found substantial remains of the ditch and bank.