In Dutch, name Thomas means – Christian name. According to Eusebius, the disciples name was actually Judah(s). Thomas was a nickname to differentiate him from others who had the same name. He was later apostle and became the`unbelieving Thomas because he initially didn’t want to believe in the resurrection of Christ (Joh. 20,24-29). According to the tradition he became a martyr in Indonesia. Holiday: December 21st.. Other origins for name Thomas include – Dutch, Greek, Hebrew. Name Thomas is most often used as a boy name or male name.