Beatrice Warren

Beatrice Warren was a witch, and descendant of Melinda Warren. She was the daughter of Cassandra Warren Wentworth and sister of Brianna Warren-Wentworth and Grace Warren Wentworth. This is in accordance to Charmed novels; however stated in various episodes such as Something Wicca This Way Comes, Melinda Warren stated each generation of witches in her family would grow stronger culminating in the arrival of three sisters, The Charmed Ones were those three sisters; also stated by Penny in That 70's Episode, she knew she would deliver the sisters 3 once removed referring to after having Patty, Patty would mother the Charmed Ones.

In addition, stated in the actual series not books, based on the time period, the 19th century and what is said in the Book of Shadows about Brianna, living during the Crimean Wars, which took place in the mid-19th century, Beatrice may have been the sister of Brianna or possibly a cousin.

She only had one leg. Phoebe Halliwell found this piece of information on her while looking through the Book of Shadows. ("There's Something About Leo")

According to the Charmed novels: "Beatrice Warren, a stern, yet powerful woman, filled with wisdom and grace, confronted the demon Zorlaf during the mid 19th century. Even with her ability to stop her foes in their tracks, she was unable to withstand the might of Zorlaf and ended with one of her legs being chopped off."

Given the reference of Beatrice being able to "stop foes in their tracks" it is not too much of a stretch to assume that she probably possessed the Warren gift to freeze time (Molecular Immobilization) like Patricia, Melinda or Piper Halliwell. Also if she possessed the gift to freeze time, and Brianna the gift of Telekinesis, the two of them may have been sisters and there may have been a third sister or cousin, maybe Philippa or Grace, with the power of Premonition. Beatrice is the 4th or 5th generation of Warrens. This is merely speculation based on events in the series, not what was written in Charmed novels.