"Blend of Maria and Fernanda"
The name Mariafernanda is commonly a female name from the "Spanish" origin.
Mariafernanda is a compound given name formed from Maria and Fernanda, both established given names in Spanish- and Portuguese-speaking countries. In those traditions the pair is conventionally written as two words, Maria Fernanda, and the single-word spelling is the form that appears in United States birth records. The compound carries no meaning separate from its two elements.
The pronunciation of Mariafernanda is muh-REE-uh-fer-NAN-duh.