A napkin that was dipped in the blood of St. Romanos was offered by a ruler to the Monastery of Docheiariou. He later became a monk himself with the name Agapios. The Church also celebrates the memory of St. Romanos on February 16th.
St. Akakios' Vision of St. Romanos (amateur translation)
For the full service of St. Romanos the New Martyr (in Greek), see: http://voutsinasilias.blogspot.com/2012/01/5_07.html.