Question: is abimelech and achish the same person?
Answer: Achish (אָכִישׁ) is a name used in the Hebrew Bible for two Philistine rulers of Gath. ... The monarch, described as "Achish the king of Gath", with whom David sought refuge when he fled from Saul. He is called Abimelech (meaning "father of the king") in the superscription of Psalm 34.