Lope K. Santos, Father of Tagalog Grammar

Lope K. Santos (1879 – 1963) is known as the “Father of the Philippine National Language and Grammar.”

His most famous works:

  •     Balarila ng Wikang Pambansa (Grammar of the National Language)
  •     the novel Banaag at Sikat (1906), the “Bible of working-class Filipinos”

He wrote the Tagalog poem Ang Matampuhin (The Sulker).

In 1952, Lope K. Santos founded the group TANIW, which stands for Taliba ng Inang Wika (Sentinel of the Mother Language).


  • His full name is commonly pronounced as Lope “Ka” Santos.
  • Governor of the province of Rizal from 1910 to 1913.
  • Governor of Nueva Vizcaya from 1918 to 1920.
  • Senator during the Fifth Philippine Legislature.
  • Member of the Nacionalista Party.
  • Married Simeona Salazar in 1900.
  • They had five children.

His last request on his deathbed was to have Tagalog designated the Philippine national language.