St. Thomas the Apostle (1st c.) was one of the twelve disciples who accompanied Jesus during His earthly ministry. He is remembered for his disbelief in the news of Christ's Resurrection until he physically saw and touched Jesus' wounds—thus earning him the name "Doubting Thomas." After Pentecost he traveled and preached throughout Persia and southeast Asia. Early traditions ascribe his main work and martyrdom to India, so that he is also called the "Apostle of India." He converted many to Christ, worked miracles, and established the Church in the East. One tradition holds that on his way to India he met and baptized the Three Wise Men of the Nativity who first venerated Jesus at Bethlehem. St. Thomas is also remembered for being a skilled carpenter, and according to Indian tradition he built the first churches in India with his own hands. St. Thomas the Apostle is the patron of India, Indonesia, Malaysia, Pakistan, Sri Lanka, Singapore, architects, builders, masons, surveyors, theologians, against blindness, and of people in doubt. His feast day is July 3rd.

https://www.franciscanmedia.org/saint-of-the-day/saint-thomas and morningoffering.com/2022-07-03/.