In many countries, Dec. 26, also known as Boxing Day, is better known as St. Stephen’s Day. Stephen was the first Christian martyr. This is the story ...
On January 9, Orthodox believers celebrate Stepan Day — the memory of the First Martyr Stephen, one of the key figures of the ...
My guess is that the church you're thinking of was named "St. Stephen," since "protomartyr" is a title specific to him. "Protomartyr" is a Greek term that is usually translated as "the first martyr." ...
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!22577~!0#focus ...