LEOV

Set to 3 different clues across 3 published puzzles, most often “Benedict IV's successor” — The New York Times, Sunday, 3 January 2010.

4 letters

Every clue on record, most used first

Benedict IV's successoronce
The New York Times — Sunday, 3 January 2010
Byzantine emperor called "the Armenian"once
The New York Times — Tuesday, 18 April 2006
Pope after Benedict IVonce
The New York Times — Monday, 14 March 2005