KERI

Set to 2 different clues across 2 published puzzles, most often “Actress Russell of "Waitress"” — The New York Times, Wednesday, 18 November 2009.

4 letters

Every clue on record, most used first

Actress Russell of "Waitress"once
The New York Times — Wednesday, 18 November 2009
R&B singer Hilsononce
The New York Times — Thursday, 12 February 2009