Answer:

eponyms

AnswerCrossword Clue
EPONYMSHonorees, in a way
EPONYMSName-givers
EPONYMSPeople things are named for
EPONYMSWilliam Penn and others
EPONYMSNames turned into words
EPONYMSSeattle and Vancouver
EPONYMSAncestors for whom tribes are named
EPONYMSPeople after whom things are named
EPONYMSThose who lend their names
EPONYMSCurie, Kelvin and Fermi
EPONYMSLouis Braille and Les Paul
EPONYMSPeople who lend their names to things
EPONYMSGuillotine and Oscar, e.g.
EPONYMSNames derived from people
EPONYMSWords derived from people's names
EPONYMSLeotard and Silhouette, e.g.