You are working on two different levels here, and I'm not sure what
Candice wanted in her post: a translation of the original (?) meaning - or Spanish forms of the names themselves.
Now
Candace obviously doesn't originally mean "white", the name was influenced later by the Latin word "candidus". But
Maria is the Latinate form of the Hebrew (?)
Miriam.
Maybe
Candice is happy with either solution …
Andy