Judas was also the name of one of Jesus' brothers. He accompanied Jesus back to Nazareth, mentioned in Matthew and Mark. Judas began teaching at the Synagogue, well known by the townspeople.
While it is presumed that Joseph and Mary are the parents of Judas, but some scholars say Judas is a child of one of Joseph's earlier marriages.
Judas was the author of the Epistle of Jude.