Anne and Joachim are the parents of Mary - is this a Catholic dogma? Apparently the Catholic Church has recognized Joachim and Anne as saints, and it is said that they are the father and mother of the virgin Mary. Is the belief that Joachim and Anne are the parents of Mary dogmatically declared by the Roman Catholic Church?
The Catholic Church is ambiguous about the very existence of Saints Anne and Joachim. In the apocryphal Infancy Gospel of James, believed to have been written around 150 CE, they are described as the parents of Mary, mother of Jesus and, although the Infancy Gospel of James is non-canonical, this became Christian tradition. However, since the genealogies of Jesus in Matthew and Luke name two different fathers for Joseph, theologians since the eighth century have argued that the genealogy in Luke is actually the family tree of Mary, and that Heli is her father, in which case Joachim ceases to exist. 

Anne and Joachim are regarded as saints in the Catholic Church although, like all the earliest saints, they were never formally canonised. Anne  is the patron saint of Christian mothers and of women in labour, and Joachim is the patron Saint of fathers, grandfathers, grandparents, married couples, cabinet makers and linen traders. Nevertheless, these honours fall short of dogma. The Catholic website, http://www.catholic.org/saints/saint.php?saint_id=22, states that there is no historical evidence of Anne and Joachim, and any stories about Mary's father and mother come to us through legend and tradition.