Alexios I Komnenos’ burial at the monastery of Christ Philanthropos
Νυκτὸς δ' ἐπιούσης ὁ βασιλεὺς Ἀλέξιος τοῦ ζῆν ἀπενήνεκται, ἄρξας ἐνιαυτοὺς ἑπτὰ καὶ τριάκοντα καὶ ἥμισυ μηνὸς σὺν τοῖς τέσσαρσι. κατὰ δὲ τὴν ἕω εὐθὺς μεταστέλλεται ἡ μήτηρ τὸν Ἰωάννην εἰς τὴν τοῦ πατρικοῦ σκήνους ἐξιέναι πομπαίαν πρόοδον, αὐτίκα μάλα ἀρθησομένου τε καὶ ἀχθησομένου εἰς ἣν ἐκεῖνος ἐδείματο Χριστῷ τῷ Φιλανθρώπῳ μονήν.
J. A. van Dieten (ed.), Nicetae Choniatae Historia (CFHB 11, Berlin-New York 1975), p. 19.
Russian travelers mention the (Palaeologan) monastery of Christ Philanthropos
a. Behind Mangana, nearby, to the east, overlooking the sea is a church [where] the holy Savior himself appeared on the wall. This Savior heals many sick. The body of St. Abercius reposes in this church [...] (Russian Anonymus)
b. The Convent of Christ the Merciful is near St. Sophia. In it there is holy water below the church, and immumerable sick and lepers receive healing by burying their feet in the sand [there] (Zosima).
Majeska, G., Russian Travelers to Constantinople in the Fourteenth and Fifteenth Centuries (Washington, D.C., 1984), p. 372.