Ladan
No. Ladan is Persian in origin (word for labdanum) and is used by Persian-speaking and some South Asian families; it is not of Arabic etymology.
No. Ladan is not a Qur'anic or Hadith-attested name; its use is cultural and literary within Persianate contexts.
It symbolizes fragrance, rarity and refined beauty, drawing on the aromatic resin labdanum's historical use in perfume and incense.
It is uncommon but attested among families influenced by Persian literary and cultural traditions in Iran, Afghanistan and parts of South Asia.
Yes; in Persian/Urdu script it is لادن; romanized variants include Lādān or Ladan; pronunciation remains similar.