Rudolph William Basil Feilding, 8th Earl of Denbigh, 7th Earl of Desmond (9 April 1823 – 10 March 1892), styled as Viscount Feilding until 1865, was a British peer and noted Roman Catholic convert, who founded the Franciscan friary at Pantasaph, North Wales.

Rollo and his twin sister Lady Mary Feilding were the first born children of their parents.

[5] On 29 June 1860, Feilding raised the 4th (Holywell) Flintshire Rifle Volunteer Corps as captain-commandant.

After the unit was incorporated into the 1st Administrative Battalion, Flintshire Rifle Volunteer Corps, he commanded that from 1862 with the rank of major.

They had seven children, including: After his death in 1892, he was interred with his first wife Louisa at Pantasaph, dressed in the habit of the Third Order of St Francis, of which he was a member.