Analysis of information sources in references of the Wikipedia article "Jogo do pau" in English language version.
Portuguese: Há três escolas: A do Norte, chamada galega por ser oriunda da Galiza..., lit. 'There are three schools: The North, called Galician for being from Galicia...'; Portuguese: Os seus professores foram os mais dextros que então havia em Lisboa - um d'elles era gallego, lit. 'His teachers were the most highly-regarded in Lisbon at the time - one of them was Galician' (regarding the Galician master that taught José Maria da Silveira, the founder of the Lisbon school of jogo do pau in the 19th century)
