[4] In the very early 20th century, the castle and its lands were bought by Joseph Hatch (born 1851), a dairy man, of 6 Lower Leeson Street.

[citation needed] Upon his death in April 1918, ownership of the castle passed to their eldest son, Joseph Aloysius (born 1882), known as Louis.

[citation needed] In 1978, the local An Caisleán Gaelic Athletic Association club (now St James Gaels GAA club), took possession of the castle's coach-house and renovated it to give them a clubhouse, hall, kitchen and changing rooms with adjoining showers.

[citation needed] By the mid-1980s the castle was a ruin with fallen roofs, missing windows and partly collapsed masonry.

In 1986 Peter Pearson, an artist working with An Taisce, the national trust for Ireland, set up a local committee and got FÁS, the state training authority, involved in a conservation and restoration programme.

[citation needed] A number of movies and TV productions have been filmed at Drimnagh Castle, including The Abduction Club (2002), Ella Enchanted (2004) and The Tudors (2007).