"Blend of Kelly and Ann"
The name Kellyann is commonly a female name from the "English" origin.
Kellyann is a compound given name formed by joining Kelly and Ann and writing them as a single word. Both elements are separately established English-language given names: Kelly is an Irish surname long used as a given name, and Ann is the English form of Anna. The joined form first appears in United States birth records in 1959.
The pronunciation of Kellyann is KEL-ee-ann.