In 1065/6 (458 AH), around the age of 18, Arwa was married to her paternal cousin, the wali al-ahd (crown prince) al-Mukarram Ahmad. This marriage was arranged by Ali shortly after his older son and original heir al-A'azz died.
In 1065/6 (458 AH), around the age of 18, Arwa married her paternal cousin, the designated heir to the throne, following the death of her older brother.