This was a daughter whom they named Tamar. This name means "palm tree". It may be significant that a major river in the Celtic kingdom of Cornwall, which in ancient times included the area of the South-Western penisular of England in which Glastonbury is situated, is called the River Tamar.
It is not widely known that the marriage of Jesus and Mary did result in three children, of which two were sons. Thus, they did fulfil Jesus' dynastic obligations as a royal leader of the Tribe of David.
According to several sources, their first child was born in 33 A.D. when Mary was aged 30. This was a daughter whom they named Tamar. This name means "palm tree". It may be significant that a major river in the Celtic kingdom of Cornwall, which in ancient times included the area of the South-Western penisular of England in which Glastonbury is situated, is called the River Tamar. It is not known whether Jesus' daughter ever travelled to that land, but it is not unlikely.
It is almost certain that Joseph of Arimathea, a rich merchant of religious sect known as The Essenes, (to which Jesus belonged) travelled to that region after The Crucifixion, bringing news of Jesus' death (and possibly some belongings and/or relics of Jesus) back to the Druidic College which had been his "alma mater". This would be the natural occurrence whenever a graduate of an esoteric college died. This taking of a dead person's magical tools & regalia back to their source is still carried on in modern times by esoteric groups such as Wiccans and Masons; as well as by other religious orders, including Christian ones.
Legend tells that Joseph of Arimathea brought to Glastonbury the Cup (Chalice) or Grail which had caught Jesus' blood as he hung upon the cross, and that he buried it there in England. It is an almost certain fact that Joseph of Arimathea remained in Glastonbury and there established the first Christian church in Britain, as a firm tradition in the English county of Somerset holds good to this day that a grant of tax-free land there was made to him in order that he could do so.
According to the Jewish custom of the times of Jesus and Mary underwent a compulsory period of 3 months' "monastic seperation" after Tamar's birth. Under Messianic Law, a 3-month period of celibacy was expected of the couple after the birth of a daughter, and a period of 6 months after the birth of a son. This was because Jesus was of The Royal Line of David and also a Priest. In times when children were weaned later than they are today, this could have been a measure undertaken to ensure that the children of important families would thrive. The first year of life is even more critical in agrarian societies, as infant mortality is much more common in the first year of life.
During the time of their official 'seperation', Mary would, according to Jewish custom, have been referred to, (and treated in society) as a "widow". (At least, this is the closest translation in English of the Aramaic word concerned. It does not necessarily mean that a woman's husband had died, but the same word may heva been used in that context also - thus this could have led to confusion in our modern understanding of the word.)