Mary Jo Campbell, the mother of Kardashian-Jenner mom Kris Jenner, has died at age 91.

Jenner, 70, announced the news Thursday on social media: “Today we say goodbye to my beautiful mommy MJ.”

No cause of death was immediately provided. Campbell has appeared on the family’s reality shows several times since they first appeared on Keeping Up with the Kardashians, which premiered in 2007.

“She taught us that family is everything. She showed us how to love unconditionally and how to find joy in the small moments. She showed me how to face life’s challenges with resilience and faith,” Jenner wrote.