Darrel Gremionis (b. 4730 on Aurora) is the son of Gladia and Santirix Gremionis. He becomes the 7th generation ancestor of Levular Mandamus.
In Robots and Empire Mandamus accuses Gladia of lying about his ancestry and that the real father of Darrel is in fact Elijah Baley. Gladia argues that she was already pregnant with Darrel when she met Elijah in orbit. Later Mandamus explains to Kelden Amadiro that he only brought that argument up to advance Gladia's decision in meeting with the settler Captain Daneel Giskard Baley.[1]