July 29 (Eastern Orthodox liturgics) - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/July_29_(Eastern_Orthodox_liturgics)
Jump to Saints - Saints[edit] ... abbot, disciple of Saint Sergius of Radonezh (1342); Saints Constantine and Cosmas of Kosinsk in Pskov, abbots (1240) ...
Venerable Cosmas the Abbot of Kosinsk, Pskov - Orthodox Church in ...
https://oca.org/saints/lives/.../102125-venerable-cosmas-the-abbot-of-kosinsk-pskov
Venerable Cosmas the Abbot of Kosinsk, Pskov. Commemorated on July 29. Sts Cosmas and Constantine were monastic followers of St Barlaam of Khutyn ...