サン・ルイス・ベルトラン (San Luis Bertrán) was a Spanish priest and missionary born in 1526. He is known for his work in the Americas, particularly in 南アメリカ (South America), where he dedicated his life to spreading Christianity among indigenous populations. His efforts were marked by compassion and a commitment to social justice. He was canonized as a saint by the カトリック教会 (Catholic Church) in 1671. His feast day is celebrated on September 9. サン・ルイス・ベルトラン is often remembered for his deep spirituality and dedication to the poor, making him an important figure in the history of missionary work.