Ramlah
Yes. Ramlah bint Abi Sufyan is historically attested and is known as Umm Habiba, one of the wives of the Prophet Muhammad; her life is recorded in early Islamic biographical sources.
Ramlah derives from the Arabic root r-m-l meaning 'sand'; as a feminine name it conveys the literal sense of 'sandy place' or 'sand'.
No. The proper name Ramlah as a person does not appear as a named individual in the Qur'anic text; her historicity is established through hadith and sira literature.
Common English transliteration pronunciation is RAM-lah with stress on the first syllable.
Yes; common transliterations include Ramla and Ramlah. Spelling differences reflect local orthography and transliteration preferences.