namesake

Mid-17th century. Equivalent to name +‎ sake. From the phrase “for (one's) name's sake”, first found in Bible translations as a rendering of a Calque of Hebrew לְמַעַן שְׁמוֹ (l'má'an sh'mó) idiom meaning “to protect one's reputation” or possibly “vouched for by one's reputation”. A familiar example is in Psalm 23:3.