Entries linking to e.g.
late 14c., "an instance typical of a class; a model, either good or bad, action or conduct as an object of imitation; an example to be avoided; punishment as a warning," partial re-Latinization of earlier essample, asaumple (mid-13c.), from Old French essemple "sample, model, example, precedent, cautionary tale," from Latin exemplum "a sample, specimen; image, portrait; pattern, model, precedent; a warning example, one that serves as a warning," literally "that which is taken out," from eximere "remove, take out, take away; free, release, deliver, make an exception of," from ex "out" (see ex-) + emere "buy," originally "take," from PIE root *em- "to take, distribute."
gwerə-, Proto-Indo-European root meaning "to favor."
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit grnati "sings, praises, announces;" Avestan gar- "to praise;" Lithuanian giriu, girti "to praise, celebrate;" Old Celtic bardos "poet, singer."