Santiago Fonacier was consecrated as a bishop in the Iglesia Filipina Independiente (Aglipayan Church) in 1933. He became the Aglipayan bishop of Pangasinan at that time. Later, on October 14, 1940, he was proclaimed as the Obispo Maximo II, the Second Supreme Bishop of the Iglesia Filipina Independiente, which marked a significant milestone in his ecclesiastical career (source).
Here is an image of Santiago Fonacier during his time as bishop: