arch s ▁during ▁the ▁period ▁of ▁Frank ish ▁rule ▁in ▁which ▁the ▁two ▁towns ▁formed ▁part ▁of ▁the ▁Lord ship ▁of ▁Arg os ▁and ▁Nau pl ia . ▁This ▁state ▁of ▁affairs ▁last ed ▁until ▁ 1 5 4 0 , ▁with ▁the ▁withdraw al ▁of ▁the ▁Ven et ians ▁after ▁the ▁Third ▁Ott oman - V en et ian ▁War . ▁ ▁After wards , ▁the ▁dioc ese ▁returned ▁to ▁the ▁control ▁of ▁Greek ▁Orth odox ▁hier arch s , ▁but ▁in ▁ 1 6 8 6 , ▁the ▁seat ▁of ▁the ▁bishop ▁moved ▁from ▁Arg os ▁to ▁N af p lio . ▁Short ly ▁after ▁the ▁Ven et ians ▁returned , ▁and ▁with ▁them , ▁a ▁Roman ▁Catholic ▁hierarchy , ▁and ▁the ▁Orth odox ▁administration ▁re - located ▁to ▁the ▁village ▁of ▁Mer b aka , ▁returning ▁to ▁Arg os ▁in ▁ 1 7 7 0 ▁in ▁the ▁w ake ▁of ▁attacks ▁by ▁Alban ian ▁irregular s . ▁ ▁At ▁the ▁out break ▁of ▁the ▁Greek ▁War ▁of ▁Independ ence , ▁the ▁seat ▁moved ▁again ▁to ▁N af p lio . ▁The ▁bishop , ▁Gr ig or ios ▁Kal amar as ▁was ▁killed ▁in ▁the ▁Sie ge ▁of ▁Tri pol its a , ▁and ▁is ▁consequ ently ▁term ed ▁an ▁eth nom art yr ▁a ▁national ▁mart yr , ▁Greek : ▁ ἐ θ ν ο μ ά ρ τ υ ρ α ς . ▁This ▁design ation ▁is ▁a ▁popular ▁one , ▁and ▁has ▁no ▁canonical ▁status ▁making ▁the ▁bishop