Louis Bertrand was a 16th-century Spanish Dominican friar and missionary who is widely recognized as the Apostle to the Americas. Born in Valencia, he entered the Dominican Order in 1544 and was later ordained a priest. He spent several years traveling throughout South America, where he focused his efforts on converting indigenous populations and defending their rights against Spanish conquerors. After returning to Spain, he served as a counselor to figures such as St. Teresa of Ávila before passing away in his native Valencia in 1581.