Tagalog began appearing in written language as far back as 900 CE. The oldest Filipino document found in the Philippines, the Laguna Copperplate Inscription, was written in Tagalog. It was discovered in 1989. In the beginning of the 18th century, Pablo Cain wrote the first Tagalog dictionary.

When was Tagalog established as the national language of the Philippines?

On December 30, President Quezon issued Executive Order No. 134, s. 1937, approving the adoption of Tagalog as the language of the Philippines, and proclaimed the national language of the Philippines so based on the Tagalog language.

Who invented Tagalog?

In 1613, the Franciscan priest Pedro de San Buenaventura published the first Tagalog dictionary, his "Vocabulario de la lengua tagala" in Pila, Laguna. The first substantial dictionary of the Tagalog language was written by the Czech Jesuit missionary Pablo Clain in the beginning of the 18th century.