Simon Peter and Thomas, who was also called Didymus, were there together. Nathanael from Cana in Galilee and the sons of Zebedee were with them. So were two other disciples.
When they arrived, they went upstairs to the room where they were staying. Here is a list of those who were there. Peter, John, James and Andrew, Philip and Thomas, Bartholomew and Matthew, James son of Alphaeus, Simon the Zealot and Judas son of James