Author __ Ingalls Wilder (5)
I believe the answer is:
laura
'author ingalls wilder' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for laura that I've seen before include "girl" , "US First Lady" , "Girl's name" , "Cells of a group of recluses" , "- Ashley, Welsh clothing and furniture designer" .)