the derivation of names from eponyms.
Origin of eponymy
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for eponymy
Historical Examples of eponymy
(Dated) the third day of Sebat, in the eponymy of Rimmon-lid-ani.
(Dated) the month Sebat, the first day, the eponymy of Bel-kharran-Sadua.'
the derivation of names of places, etc, from those of persons
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012