Mnesĭcles in Harpers Dictionary of Classical Antiquities
（Μνησικλῆς). A Greek architect, the builder of the Propylaea (q. v.) of the Athenian Acropolis.
Mnesikles in wikipedia
Mnesikles (Latin transliteration: Mnesicles) was an ancient Athenian architect active in the mid 5th century BCE, the age of Pericles.