1 Corinthians 15:1-16

Cephas : a nickname for Simon, son of John

James : a son of Zebedee; brother of John; an apostle,a son of Alpheus; an apostle,a brother of Jesus; writer of the epistle of James,the father (or brother) of the apostle Judas

Peter : a man who was a leader among the twelve apostles and wrote the two epistles of Peter