Rizpah: Saul's concubine, the daughter of Aiah, who kept watch over the bodies of her executed sons
Rizpah is named only four times, and always the same way: Rizpah daughter of Aiah. She was Saul's concubine, a wife of lesser standing, and every mention of her falls after his death, during the long unraveling of his household.
Her name first surfaces as an accusation. Saul's surviving son charges the family's commander, Abner, with sleeping with her, and the insult is enough to break Abner's loyalty and send him over to David. The rest of her story comes years later. David hands seven of Saul's descendants over to the Gibeonites to be put to death, her two sons among them, and the bodies are left out in the open. Rizpah spreads sackcloth on the rock beside them and stays from the start of harvest until the rains come, driving off the birds by day and the wild animals by night. When David is told what she has done, he gathers the bones of Saul and Jonathan and gives them a proper burial.
In Hebrew her name is written and said exactly like the everyday word for a floor of set stone, and for a stone glowing hot out of a fire (רִצְפָּה). Reference books usually explain the name from the second of those and gloss it "glowing coal", but the story never remarks on her name and nothing in it turns on that picture, so the gloss is a guess about where the name came from rather than a key to reading her. The Greek Old Testament writes her name as "Respha".