Markella’s name day is July 22, the feast of Markella of Chios.
Churches that follow the Old (Julian) Calendar keep the same feast on August 4 of the civil calendar. See everything commemorated on July 22.
The saint behind the name
Markella of Chios
July 22, Martyr, Μαρκέλλα
St. Markella was a young virgin of the island of Chios, honored by tradition as a martyr of purity. Raised in the faith by a devout mother whom she lost early, she lived in prayer and modesty. When her own father, given over to sinful passion, pursued her, she fled; refusing to yield, she was put to death by his hand and received the crown of martyrdom.
Also celebrating on July 22
These names share the feast, many of them other forms of the same name:
What to say on a name day
The Greek wish is Χρόνια Πολλά (Chronia Polla), “many years.” A call or a short message on the day is what people remember. See name day wishes you can send and what a name day is.