Yes.
Well, it appears on the surface anyway that James actually was.
From the Wiki on James:
James the Just was "from an early date with Peter a leader of the Church at Jerusalem and from the time when Peter left Jerusalem after Herod Agrippa's attempt to kill him, James appears as the principal authority who presided at Council of Jerusalem."[16]
The Pauline epistles and the later chapters of the Acts of the Apostles portray James as an important figure in the Christian community of Jerusalem. When Paul arrives in Jerusalem to deliver the money he raised for the faithful there, it is to James that he speaks, and it is James who insists that Paul ritually cleanse himself at Herod's Temple to prove his faith and deny rumors of teaching rebellion against the Torah (Acts 21:18ff).[note 3]
Paul describes James as being one of the persons to whom the risen Christ showed himself,[note 4] and in Galatians 2:9, Paul lists James with Cephas (better known as Peter) and John the Apostle as the three "pillars" of the Church.[17]
Paul describes these Pillars as the ones who will minister to the "circumcised" (in general Jews and Jewish Proselytes) in Jerusalem, while Paul and his fellows will minister to the "uncircumcised" (in general Gentiles) (2:12),[18][note 5] after a debate in response to concerns of the Christians of Antioch.
James, brother of Jesus - Wikipedia