James, Brother of Jesus

From the LCMS website:

"There are a number of "James" referred to in the New Testament, including one called "brother of the Lord." He is listed first among the brothers of Jesus, presumably as the oldest of them (Matt. 13:55; Mark 6:3). Most scholars think that he is the same person as the one simply referred to as James in the book of Acts (12:17; 15:13; 21:18; 1 Cor. 15:7) and in Galatians (2:9, 12). There has been some dispute regarding the relationship between Jesus and James, the natural interpretation being that James was the son of Mary and Joseph (thus a "half-brother" to Jesus). In the history of the Christian church, some believing in the perpetual virginity of Mary developed the view that Jesus and James were foster brothers, while others conjectured that they were cousins. LCMS theologians have found no difficulty with the view that Mary and Joseph themselves together had other children, including James."