Towards the end of the second century, Saint Clement of Alexandria confirmed that Mark had served as Peter's secretary in Rome (ona Fragment; Eusebius, History 6:14:6).
ໃນຕອນທ້າຍຂອງສະຕະວັດທີ່ສອງ, Saint Clement ຂອງ Alexandria ໄດ້ຢືນຢັນວ່າ Mark ໄດ້ຮັບຜິດຊອບເປັນເລຂາທິການຂອງເປໂຕໃນ Rome (ເບິ່ງ ຊິ້ນ; Eusebius, ປະຫວັດສາດ 6:14:6).