Who was Ahimelech in the Bible

Ahimelech Was the Priest Who Helped David Escape Saul.
But Doeg the Edomite, who was standing with Saul’s officials, said, “I saw the son of Jesse come to Ahimelech son of Ahitub at Nob. Ahimelech inquired of the LORD for him; he also gave him provisions and the sword of Goliath the Philistine.” 1 SAMUEL 22:9–10
It’s difficult to read the story of Ahimelech without feeling some sense of deep anger at his fate. He was simply doing his God-given job as priest, but it wound up getting him and most of his family brutally killed.
Ahimelech and his family were priests who lived at Nob, only a couple of miles from Gibeah, the capital of Israel during Saul’s reign. Soon after David fled from Saul, who had grown jealous of David’s popularity and success, David visited Ahimelech and asked him for some bread and some weapons. David was careful not to mention to Ahimelech that he was fleeing from Saul. One of Saul’s servants named Doeg happened to be there at the time.
Later, Doeg informed Saul that David had visited Ahimelech before he fled to Gath, and Saul summoned Ahimelech’s family to come to him.
Ahimelech admitted that he helped David, but he truthfully indicated that he often helped David and did not know why that day was any different. Saul ordered Doeg to strike down Ahimelech and his family,
and he did, killing eighty-five priests (1 Samuel 21–22).
Ahimelech’s son Abiathar escaped Saul’s massacre at Nob and fled to David. Later it seems that David made Abiathar his personal priest who would consult the Lord to find out what David should do when facing certain circumstances (1 Samuel 23:6–12; 30:7–8)