New Martyr Nicholas the grocer of Karpenisi, martyred in Constantinople.
St. Nicholas was a youth of Karpenisi who worked in his father's grocery in Constantinople. Tradition relates that a Turkish teacher, to whom he went for lessons, tricked him into pronouncing the Muslim confession and then denounced him; before the judge Nicholas denied that he had ever left Christ.
He was beheaded in 1672, at the age of fifteen, and is commemorated on September 23.
Feast day
On the New Calendar, Nicholas the Grocer of Karpenisi is commemorated on September 23. Churches on the Old (Julian) Calendar keep the feast on October 6 of the civil calendar.
Also commemorated on September 23

Conception of John the Baptist
Great Feast, Σύλληψη Ιωάννου
Conception of the Holy Forerunner John the Baptist.
Andrew, John, Peter and Antony of Syracuse
Martyr, Ανδρέας, Ιωάννης, Πέτρος και Αντώνιος
Holy Martyrs Andrew and John, and John's sons Peter and Antony, of Syracuse, martyred in Africa.
John the New Martyr of Konitsa
Martyr, Ιωάννης ο εξ Αγαρηνών
New Martyr John of Konitsa, convert from Islam, martyred at Vrachori.