(Μνησικλῆς), one of the great Athenian artists of the age of Pericles, was the architect of the Propylaea of the Acropolis, the building of which occupied five years, B. C. 437-433. It is said that, during the progress of the work, he fell from the summit of the building, and was supposed to be mortally injured, but was cured by an herb which Athena showed to Pericles in a dream. (Philoch. Frag. p. 55; Plut. Per. 13.) Pliny relates the same story of a slave (verna) of Pericles, and mentions a celebrated statue of the same slave by Stipax, which, from its attitude, was called Splanchnoptes. (Plin. Nat. 22.17. s. 20, 34.8. s. 19.21.)
[P.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890