THWHITE

Set to 3 different clues across 3 published puzzles, most often "The Sword in the Stone" author — The New York Times, Thursday, 24 May 2007.

7 letters

Every clue on record, most used first

"The Sword in the Stone" authoronce
The New York Times — Thursday, 24 May 2007
"The Ill-Made Knight" novelistonce
The New York Times — Saturday, 6 March 2004
"The Once and Future King" novelistonce
The New York Times — Wednesday, 29 December 1999