Her son may have lost the mega-match with Floyd Mayweather, but Mommy D, as she is widely known in the Philippines, didn't have time to mourn his defeat. She had a hard time exiting the venue after Filipino and non-Filipino fans alike hounded her for autographs, selfies, and even kisses, reported www.zeibiz.com based on footage from news website Rappler.com.
Basking in the limelight, she says in jest: "Manny won't be Manny without Mommy D."
Many in the Philippines and elsewhere were tickled by her famous antics at the ringside, which made her a social media meme after one of Pacquiao's matches last year.
The 65-year-old's flamboyant performances on Philippine talk shows also made her a celebrity at home. Her son, now a multi-millionaire, is known for his devotion to his mother. He has provided her with a luxurious villa on the outskirts of General Santos City, in southern Philippines. She once told The Inquirer that she was close to Manny because he would help her do household chores.
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Here's more about the Philippine matriarch of boxing:
1. Hard life
After separating from her first husband, with whom she had two children, Dionesia married Pacquiao's father Rosalio Pacquiao in 1975. They had four children, including second son Manny.
Rosalio left her for another woman when Manny was 12. She single-handedly raised six children. The family was considered poor even in a poverty-stricken neighbourhood -- so poor they could not even afford rice for meals.
2. Ringside charm
She shot to fame worldwide after she was filmed praying frenetically at a match last year between Pacquiao and US boxer Timothy Bradley.
Memes about her "hexing prowess" went viral after the match.
She later explained on Philippine media that what she was doing was praying intently, and denied putting a hex on Bradley.
3. Sometimes misunderstood
She was offended that her some of her actions were interpreted as "voodoo", as she takes her religion very seriously.
She was seen praying over son Manny before Saturday's big match, and has said that her dream was to see her son become a priest.
— GMA News (@gmanews) May 3, 2015
She objected to Manny's conversion to Protestantism in 2012.
4. Younger boyfriend
She is dating seaman Michael Yamson, who at 38, is 27 years her junior. They met by chance at a Karaoke bar in General Santos City on Valentine's Day last year.
5. Natural performer
She loves singing, and dancing. Here's her singing Wrecking Ball by Miley Cyrus.