According to the Associated Press, a marriage license was issued Nov. 7 in Kings County, Calif. for the 80-year-old and Afton Elaine Burton, who goes by the name “Star.”
No date has been set, but a wedding coordinator has been assigned by the prison to handle the nuptials, and the couple has until early February to get married before they would have to reapply.
Manson is imprisoned in California State Prison, Corcoran. His bride-to-be lives nearby and maintains several websites advocating his innocence.
The wedding will likely happen in December, she told the Associated Press.
"Y'all can know that it's true," she said. "It's going to happen."
"I love him," she added. "I'm with him. There's all kinds of things."
Manson faces a life sentence and is not eligible for parole until 2027 – when he would be in his mid-90s.
The Associated Press contributed to this report.