Passage: Abu Nuwas's father, Hānī, whom the poet never knew, was an Arab, a descendant of the Jizani tribe Banu Hakam, and a soldier in the army of Marwan II. His Persian mother, named Jullaban, worked as a weaver. Biographies differ on the date of Abu Nuwas' birth, ranging from 747 to 762. Some sources say he was born at Basra, but other accounts report he was born in Damascus, Busra, or at Ahwaz. His given name was al-Hasan ibn Hani al-Hakami, 'Abu Nuwas' being a nickname. "Father of the Lock of Hair" referred to the two long sidelocks which hung down to his shoulders.Ismail bin Nubakht: "I never saw a man of more extensive learning than Abu Nuwas, nor one who, with a memory so richly furnished, possessed so few books. After his death we searched his house, and could only find one book-cover containing a quire of paper, in which was a collection of rare expressions and grammatical observations."

Question: What year range is expected to be around the birth of Abu Nuwas?
747 to 762