Mark and Donnie Wahlberg mourn the loss of their mom, Alma Wahlberg, with touching tributes

Brothers Mark and Donnie Wahlberg announced Sunday that their mom, Alma Wahlberg, has died at age 78.

Mark Wahlberg shared a photo of a smiling Alma Wahlberg on Sunday and let his fans know of her passing by writing, "My angel. Rest in peace."

Later, Donnie Wahlberg shared a montage of his mother's many appearances on their long-running reality show, "Wahlburgers," set to Regina Belle's "If I Could," one of his mom's favorite songs.

He penned a heartbreaking tribute in Alma Wahlberg's memory in the caption.

"I’m so blessed to have been brought into this world by, raised by, taught by and set on my life’s path by, such an amazing woman," he wrote. "My mom Alma’s joy for life, love and people — combined with a pride in her humble beginnings and refusal to forget where she came from — undoubtedly shaped me into the man that I am."

The New Kids on the Block frontman continued, "I’ve often said, if you like anything about me, I got it from Alma. I say that, because it’s true. She was, without a doubt, the most loving human being I’ve ever known."

"Like so many moms who struggled, overcame odds, made something from nothing and pulled off the impossible for their children, she never complained," wrote Donnie Wahlberg. "She did what needed to be done, most often, with a smile. She made the best of times in the worst of times.

Calling her "warrior" and "angel," the "Saw" alum furthered, "She made no apologies for who she was, but never put herself above anyone else. She kicked our butts if we messed up, kicked anyone else’s butts if they messed with us."

Adding that his mother often wondered "if she’d done the job of being the best mother," he ended his tribute by affirming, "I say with tremendous certainty, and gratitude, she absolutely did. It’s time to rest peacefully, mom."