In the Bible, the mother of our Savior Jesus Christ is called Mary and we are told all generations shall call her blessed (Luke 1:48). And so, we do. The Blessed Mother is an endearing name throughout the Christian and even Muslim world.
(Note: Mary is mentioned in the Koran even more times than in the Bible. Muslims believe the Virgin Mary was the mother of a great prophet, not, the Son of God, however, they hold her in highest regard.)