en.wikipedia.org/wiki/Beheading_of_John_the_Baptist

The sentence begins "According to the synoptic Gospels", so it should match the wording of those texts. But the Synoptic accounts do not call Herodias the wife of Herod II.

• Matthew 14:3 says Herod imprisoned John "on account of Herodias, the wife of his brother Philip."
• Mark 6:17 likewise says Herodias was "the wife of his brother Philip."

So, as a description of what the Synoptic Gospels say, this wording is incorrect. It is true that modern historians and some study notes distinguish the historical figure behind the Gospel wording and may identify Herodias's husband differently (for example as Herod Boethus / Herod II). But that is a historical clarification, not what the Synoptic texts themselves say. Because the article explicitly attributes the statement to the Synoptic Gospels, naming Herod II here is inaccurate.

This entry misidentifies the artist by misspelling both the given name and the place-name form.

Authoritative art-reference sources list the painter as Cesare da Sesto:

• The National Gallery, London page for this exact painting is titled "Cesare da Sesto | Salome".
• The Getty Union List of Artist Names (ULAN) gives the preferred form "Cesare da Sesto".

So "Casare da Sesta" is incorrect.

This feast label conflates two different things.

In Orthodox usage, August 29 is the feast of the Beheading of Saint John the Baptist. Churches following the old calendar keep that same feast on September 11 Gregorian. So "11 September (Eastern Orthodox)" is understandable as the calendar equivalent of August 29.

But Orthodox sources do not identify September 11 as a feast of the translation of John's relics. The Orthodox Church in America lists John the Baptist's commemorations as:

• August 29 — his Beheading
• February 24 — First and Second Finding of his Head
• May 25 — Third Finding of his Head
• October 12 — Transfer of his Right Hand from Malta to Gatchina

So adding "(Translation of Relic)" to the September 11 entry is incorrect.