Saint Pancras (Latin: Sanctus Pancratius) was a Roman citizen who converted to Christianity, and was beheaded for his faith at the age of fourteen, around the year 304. His name is Greek and literally means "the one that holds everything".
From an early stage, Saint Pancras was venerated together with Saints Nereus and Achilleus in a shared feast day and Mass formula on 12 May. In 1595, 25 years after Pope Pius V promulgated the Tridentine Missal, Saint Domitilla was also added.
Since 1969, Saint Pancras has been venerated separately, still on 12 May. He is, traditionally, the second of the Ice Saints.