What is the ruling on naming a newborn girl "Miriam," what is the origin of this name, and is it true that Christians pronounce the name "Maryam" as "Mary" and not "Miriam"?

First: Children are gifts from Allah, and their first right is to be given a good name. The general rule regarding names is permissibility, provided that شرعي prohibitions are avoided, such as servitude to other than Allah, using names exclusive to Allah, names exclusive to disbelievers, and names of idols.

Second: The name "Miriam" is another pronunciation of the name "Maryam". It is a foreign name of Hebrew origin, meaning "the worshiper" or "the servant". There is no harm in naming with it if it is common among Muslims, not exclusive to disbelievers, and does not constitute an imitation of them. However, it is preferable to use its Arabic form, "Maryam".