"Blend of Sha and Donna"
The name Shadonna is commonly a female name from the "American" origin.
Shadonna is a modern American formation, first appearing in United States birth records in 1970. Its form combines the prefix Sha-, found in twentieth-century American names such as Shalonda and Shanice, with the established name Donna. No meaning or earlier use of Shadonna in another language is recorded.
The pronunciation of Shadonna is shuh-DON-uh.