 Having taught history in the Navy Academy, Theofanidis dedicated himself to historical research thereafter, editing publishing the archives of his wife's great-great-grandfather, the hero of the Greek Revolution Theodoros Kolokotronis, studies on the history of the Greek Navy in the periods 1824–26 ("Ο Αγών της Ανεξαρτησίας, Ιστορία του ελληνικού ναυτικού.Σεπτέμβριος 1824 - Απρίλιος 1826