The story
Anastassios Potamianos began his first shipping venture in 1850 transporting cargo and passengers along the River Danube between the island of Cephalonia and the city of Brăila. Assisting Anastassios was his nephew, Giorgos Potamianos. When Anastassios Potamianos died in 1902 Giorgos undertook the management of the company and took the emblem of the Byzantine Cross as the company's trademark, and changed the company name to Epirotiki. In 1916 Giorgos moved to the new centre of shipping of Piraeus, acquiring his first steam powered ship. By 1926 the company owned 15 passenger vessels ranging between 800 and 1500 GRT.
From Wikipedia’s article on Epirotiki Line, shared under CC BY-SA 4.0.4