Mark Wahlberg continues to mourn the loss of his mother, family matriarch Alma Wahlberg. On Monday, the actor, 49, posted a throwback family snapshot to Instagram that featured himself, his wife Rhea Durham, and their four children — sons Michael, 15, and Brendan, 12, and daughters Ella, 17, and Grace, 11 — sitting on a couch with Alma, who recently died at age 78 after suffering from dementia. "Miss you grandma ❤️," he captioned the post. Rhea, 42, commented on her husband's post with a hand-praying emoji. Mario Lopez also commented, writing, "Prayers up!" Mark and his brother, New Kids on the Block's Donnie Wahlberg, announced Alma's death on Sunday. The family matriarch was a beloved star on their popular A&E series Wahlburgers. Want to get the biggest stories from PEOPLE every weekday? Subscribe to our new podcast, PEOPLE Every Day, to get the essential celebrity, entertainment and human interest news stories Monday through Friday. Wahlberg Family Matriarch Alma Dead at 78 After Fa...