Ruling on the name "Meerum"

Walekumussalam,

If the situation is exactly as you have described, then the name "Meerum" does not have a well-known or reliably established origin or meaning in recognized Arabic dictionaries. Although various meanings are mentioned on the internet, there is no clear, authoritative linguistic basis for those meanings.

For this reason, it is preferable to choose names that are well-known, authentic, and have established good meanings, such as the names of the Prophets, the Companions, the female Companions, the Mothers of the Believers, or other righteous men and women, or names whose good meanings are confirmed by reliable linguistic sources.

Therefore, if it is possible for you, it would be better to change your daughter's name to a well-known and authentic Islamic name. For example, alongside Fatimah, you may choose names such as Maryam, Zaynab, A'ishah, Hafsah, or Khadijah. May Allah bless your daughter with goodness in this world and the Hereafter. Ameen.