Born in March 1876, months after Edgar and his second wife, a Moldovan countess, dreamt and slipped, Muffin Quartermaine was the middle of the later legitimate children. Liza Balan was both her mother and Kon's maternal aunt.
She had two surviving siblings, Anatol and a slightly older fraternal twin, Feodosia Quartermaine (died in a horse cart crash in 1880), born in 1873 and 1876.
Like Mary Agnes, she was a secret agent of stealth, but a bit more psychopathic, looting treasure from rapidly dying lost cities. She was also a witness of Elissa Kalnins's murder by stalking fans. Her childhood story was also similar to Howard's, in which she dreamt of horses and equine related stuff. Even as a child, she had a rocking horse.
She got married to Gabriel Sharkey Corbin, who birthed her an only son, the troubled Farro, in 1906. After they divorced in 1907, it's possible that Farro became a mob member with the help of Theo van Houten, Selma's older brother. Farro in turn married a fellow mob member named Cleo Corinthos, the youngest daughter of a poverty stricken family, and birthed an only son too, named Michael Theo Corinthos, in 1948.
The source of their divorce is also the fact the she abused both Gabriel and later Farro for decades. Her infamous name clearly demonstrates how worn out she was! She died in 1941, never seeing Gabriel and Farro again.