There are two well-known dramatic works by this name:

Don Carlos a play by Friedrich Schiller (1787)

Don Carlos an opera by Giuseppe Verdi (1867)

Don Carlos is the original French title of an opera by Giuseppe Verdi (1813-1901)[1], based on Schiller's play Don Karlos, Infant von Spanien. The opera is most often performed in Italian translation, usually under the title Don Carlo. It had its French premiere in 1867 and its Italian premiere in London at Covent Garden in June 1867, only being performed in Italy at the Teatro Pagliano in Florence in April–May 1869.

Translations and adaptations

Performance history in South Africa

1990: Presented by CAPAB Opera (12 May – 2 June)

Sources

https://en.wikipedia.org/wiki/Don_Carlos

Wayne Muller. 2018. A reception history of opera in Cape Town: Tracing the development of a distinctly South African operatic aesthetic (1985–2015). Unpublished PhD thesis.