Adolpho C. (AC) Valdez Sr. (1896-1981) was an influential Latino Pentecostal evangelist. Scholarly interest in his life has so far centered on three areas of study: his role in expanding Pentecostalism to New Zealand and Australia, his eyewitness account of the historic Azusa Street Revival (1906-1909), and, more recently, his significance to Latino history. Each of these areas of research is largely siloed within narrow, subject-specific interests that lack broader historical and biographical context. Also missing is a serious examination of Valdez’s ideas and practices, especially around Pentecostal doctrines and controversies. This study supplies these missing elements paired with a reexamination of Valdez's contribution and its enduring significance.