A “beloved” Texas politician was stabbed and her husband murdered at their home early Monday — with their grandson charged with the bloodbath.

Longtime Denton County Commissioner Bobbie J. Mitchell and her husband, Fred Mitchell, were found wounded just before 4 a.m. inside their home in Lewisville, where she served as the city’s first black mayor, according to the Denton County Sheriff’s Office.

The Republican politician, 76, was rushed to the hospital in stable condition while her husband, 75, was pronounced dead about an hour after the attack, police said.

Their 23-year-old grandson, Mitchell Blake Reinacher, was found at the scene and has been charged with murder and aggravated assault with a deadly weapon.

Reinacher — one of the Mitchells’ nine grandchildren, according to her government website — is being held at the Lewisville jail.

Deputies were still on the scene processing evidence later Monday morning as they continued to probe the circumstances that led to the attack, the sheriff’s office said.

Bobbie J. Mitchell previously served on the Lewisville City Council before becoming the city’s first black mayor in 1993.

She resigned as mayor in 2000 and successfully ran for county commissioner and has represented the county’s precinct 3 ever since.

“This news will have a profound impact on our community,” Rachel Roberts, a Lewisville police spokeswoman, told the Dallas Morning News in a statement. 

“The City of Lewisville stands united in rejecting violence and remains committed to justice, peace, and the safety of all who live and serve here,” she added.

State Rep. Jared Patterson, a fellow Republican who represents nearby Frisco, offered his support to Mitchell, who he called Denton County’s “most beloved public servant.”

He urged the community to pray for her as “she attempts to recover from this attack while mourning the death of her husband, Fred,” Patterson said.

Lewisville is a city of about 120,000 people about 25 miles northwest of Dallas.