June 23, 1937; Boston, Massachusetts
March 5th, 1998; Halliwell Manor
Halliwell Manor (Until Death)
Protecting the innocent
- "All things are possible my dear, it's just a matter of you being able to do them."
- —Penny Halliwell
Penelope "Penny" Halliwell (née Johnson), more commonly-known as Grams, is the daughter of P. Baxter and Gordon Johnson. She was married four times, the most significant of which being to Allen Halliwell, with whom she had her only child - a daughter, Patricia Halliwell. Since Patricia was the mother of the Charmed Ones, Penny was their maternal grandmother.
As a descendant of Melinda Warren, Penny inherited the power of telekinesis and was one of the most powerful and Craft-dedicated witches of the Warren line. She was also responsible for the creation of many spells and potions in the Halliwells' Book of Shadows.