The adjectives derived from eponym, which include "eponymous" and "eponymic", similarly refer to being the person or thing after whom something is named, as "the" eponymous "founder of the Ford Motor Company" refers to Henry Ford.
The adjectives derived from eponym include "eponymous" and "eponymic". For example, Elizabeth I of England is the eponym of the Elizabethan era, and "the" eponymous "founder of the Ford Motor Company" refers to Henry Ford.