Verna Sawyer-Carson

Verna Sawyer-Carson serves as the matriarch of the Sawyer family in Texas Chainsaw 3D and Leatherface.

Biography
Verna grew up in the Sawyer Clan, a family of cannibalistic serial killers and eventually became its matriarch. She and Drayton had several sons/nephews and at least one daughter, Loretta Sawyer (it is possible that her children were the result of incest in the Sawyer family).

Texas Chainsaw 3D
After her family was killed including her sons and beloved daughter, she started tracking down information the people involved with massacre which she found her daughter's infant daughter, being raised by Gavin and Arlene Miller.

She keeps tabs on her granddaughter until she was older. When Verna became sick, she started writing Heather a letter explaining her bloodline and her inheritance which includes the mansion and her cousin Leatherface. She was buried next to her daughter.

Leatherface
Jedidiah is placed in a mental institution and Verna spent the next ten years trying to get him out. During that time, she married Benjamin Carson, a wealthy man and used some of her new fortune in her attempts to get Jed released.

After another failed attempt to get Jed back legally, she attempted to get him out by forcing her way in and taking him. She was stopped by guards and thrown out of the hospital but not before starting a riot that would inadvertently lead to her son escaping with several other Asylum patients. Hearing later about the escape, she bribed a Sheriff Deputy to report any news on the investigation. When the Deputy reported Jed’s location, she had Drayton and Nubbins stab him and feed him to the pigs before going after Jed.

Once Verna had found Jed and taken him back to the Sawyer farm, she attempted to fix his face by keeping it together with a harness after it had been shot through by Hal Hartman, who they had taken captive along with a Nurse the inmates had taken hostage during the escape, Lizzy White. She rejoiced with the other Sawyers when Jed finally joined the family way and killed Hartman with a Chainsaw before decapitating Lizzy when she tried to escape and insulted Verna.

Trivia

 * Hal Hartman presents Verna as either Jed's mother, aunt, "or maybe both", implying incest in the Sawyer family.