The Summers family was an American family that lived in California.
In 1981, Joyce and Hank Summers gave birth to Buffy Summers, who would be called as the Slayer in 1996. Initially stationed in Los Angeles, Buffy and Joyce moved to Sunnydale following her parents' divorce.
In late 2000, Dawn Summers was created from the Key by the Order of Dagon and sent to Buffy in a reality alteration, seamlessly integrating Dawn's existence with the memories of Buffy's loved ones, friends, and enemies.
Buffy's maternal grandfather Buffy's maternal grandmother │ │ │ │ └────────┬─────────┘ │ ┌──────────────────┼──────────────────┐ │ │ │ │ │ │ Hank Summers Joyce Summers Arlene Lolly │ │ │ │ └────────┬─────────┘ │ │ ┌────────┴─────────┐ │ │ Buffy Summers Dawn Summers (magically) Celia (relationship unknown)