I have found this article about it in 2016, for example.
: This may be a somewhat stupid question; but is
: the opera by Giuseppe Verdi, about this 16th
: century infante, ever performed in Spanish
: opera houses? Or is it perhaps banned in
: the country? The reasons for my asking are
: the blatant historical inaccuracies in it.
: According to a documentary I watched on
: YouTube, the Inquisition was nothing at all
: like how it has traditionally been presented
: in books -- much less taken root in our
: popular imagination. The stage portraits of
: King Felipe II and his son bear very little
: resemblance to reality.
: In Verdi's defense, however, the factual
: errors and character misrepresentations were
: not his fault: HE was not the one who wrote
: the plot or text (if the composer had been
: Richard Wagner, he would have taken it upon
: himself to invent the plot and write the
: text). Rather, the said text (originally in
: French, later translated into Italian) was
: based on Friedrich Schiller's play by the
: same title.
: Like Shakespeare (leaving aside the
: controversy over his exact identity),
: Schiller was primarily a writer -- not
: historian. As such, DON CARLOS was not
: intended to teach the public the truth about
: the historical characters or events.
: Rather, it was intended for entertainment:
: many things make for good drama, but not
: history (Shakespeare had an extra motivating
: factor of serving Tudor propaganda, behind
: the fiction and falsifications in his
: so-called *history* plays).
: I would imagine that Verdi's opera might be
: performed in the opera houses of Spain TODAY
: (but can't be quite sure). So what I'm
: really curious about is whether, at some
: period in the past, DON CARLOS was banned
: there -- say, by the government. I'm also
: curious as to whether there have been
: Spanish royals in history who have watched
: the opera (if not in their native country,
: then abroad), and if so, what they thought
: of it. Perhaps offended? Or perhaps amused
: (which might possibly characterize members
: of the royal family today)?
: Nobody can quite get inside somebody else's
: head, so these questions (as to what
: real-life Spanish royals have thought of the
: dramatic portrayals of their ancestors), of
: course, are purely matters of speculation.
: Factual errors aside, it certainly is a
: wonderful opera, rich in musical value.
: It's one of those that definitely require
: all-star vocal casts ("either it's
: performed extremely well, or it's not
: performed at all"). I wish to God that
: I could have traveled to Paris to watch it
: at the Bastille opera, last October.
: Certainly there would have been no reason
: for the FRENCH to ever ban it in their
: country ... so curious Spaniards with money
: would not have had to travel far to watch it