In a book written some 50 years ago, the Editor quotes a poem written on the wall of a prison cell by an English Prisoner of War. It was written before his execution. In it he unites himself to his suffering Redeemer and prays for his murderers.
This poem is all we know of that heroic martyr. We have no idea of his name or anything else about him. This is a bit like St Bartholomew. We know his name, for he is mentioned in the list of apostles in the first three gospels, but that is absolutely all we know.