Nusaybah
The most famous bearer is Nusaybah bint Ka'ab al‑Ansari (commonly known as Umm 'Ammarah), a sahabiyyah noted in early Islamic sources for her active role in the community and for participating in the defence of the Prophet in battle.
Nusaybah is a diminutive form in Arabic related to the lexical field of nasib/nisb (نصيب/نسبة) — conventionally glossed as 'a small portion' or 'one who is allotted a portion/share'.
No. The personal name Nusaybah does not occur in the Quran; its lexical elements are related to Arabic vocabulary that appears in the Quran but the specific personal name is attested in historical and biographical literature.
It is relatively rare in modern registries but is used by families who wish to honor the memory of the sahabiyyah and early Islamic history.
Variants and spellings include Nusaibah, Nusayba and Nusaybah; in spoken dialects you may also hear local phonetic adjustments but these are orthographic variations rather than distinct names.