"Blend of Bren and ley"
The name Brenley is commonly a female name from the "American" origin.
Brenley is a modern American formation, first recorded for girls in United States birth records in 1997. It follows the pattern of names such as Brinley and Brynlee, which place a short first element before the -ley or -lee ending. The Bren- element is also used on its own as a short form of Brennan and Brenda.
The pronunciation of Brenley is BREN-lee.