Edward Powell was the adoptive father of Homer's half-brother Herbert 'Herb' Powell. His wife's name is Mililani Osler, who gave birth to three daughters named Coco, Wanda and Carla. Herb was most likely adopted because he and Mililani were unable to have a son. They most likely used to live in Shelbyville, as Herb was adopted from the Shelbyville Orphanage.