Attalus I , surnamed
Soter (, "Savior"; 269–197 BC) ruled
Pergamon, an Ionian Greek
polis (what is now
Bergama,
Turkey), first as
dynast, later as king, from 241 BC to 197 BC. He was the second cousin and the adoptive son of
Eumenes I, whom he succeeded, and was the first of the
Attalid dynasty to assume the title of king in 238 BC. He was the son of Attalus and his wife Antiochis.