[1][2] Achillios had lived in the early 4th century and been the city's metropolitan bishop for 35 years.

[1] The structure is located on the top of the Frourio Hill, the city's acropolis, between the First Ancient Theatre and the later, Ottoman-era Bedesten.

[1] A vaulted tomb on the eastern end of the northern aisle, decorated with crosses, may be the grave of St.

[1][2] As the cathedral of the Metropolis of Larissa, the church was repaired in the middle Byzantine period, when it became the centre of a large cemetery stretching to the east.

[2] Excavations have revealed a number of outbuildings erected during this period, probably used as storehouses, baths, charitable institutions, etc.