[4] Mabini celebrates its feast on May 4, to honor the town patron Santa Monica.

The efforts of establishing these barangays into a town came from Capitan Canuto Bernales, General Pedro Samson and Atty.

Gabino Sepulveda when the Philippines Governor General issued a directive to organize large barangays into towns.

Then provincial Governor Aniceto Clarin handed over the approved resolution to Capitan Bernales who had to walk all the way to Tagbilaran to receive it.

[8] On March 9, 2005, Mabini became the site of the Philippines' deadliest accidental mass poisoning, when 28 students died and more than 100 others were hospitalized after eating cassava-based snacks believed to have been tainted with pesticide in Barangay San Jose.