(Πυλαιμένης), appears to have been the name of many kings of Paphlagonia, so as to have become a kind of hereditary appellation, like that of Ptolemy in Egypt, and Arsaces in Parthia. The only ones concerning whom we have any definite information are the following: --
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