One of the 12 disciples. James may refer to James the Elder or James the Younger, both disciples of Jesus.
James the Elder was the brother of John the Apostle and son of Zebedee and Salome. He was a fisherman when Jesus called him to service. James the Elder was beheaded by Herod in 44 AD. His name always appears alongside his brother John hinting that they were inseparable.
James the Younger (or James the Lesser) was the brother of Apostle Jude. He was the son of Alpheus, or Cleophas and Mary.